CN201839426U - Internal magnetic type magnetic circuit system - Google Patents
Internal magnetic type magnetic circuit system Download PDFInfo
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- CN201839426U CN201839426U CN2010202171401U CN201020217140U CN201839426U CN 201839426 U CN201839426 U CN 201839426U CN 2010202171401 U CN2010202171401 U CN 2010202171401U CN 201020217140 U CN201020217140 U CN 201020217140U CN 201839426 U CN201839426 U CN 201839426U
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- magnetic steel
- magnet steel
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Abstract
The utility model discloses an internal magnetic type magnetic circuit system which comprises a U iron (1), a main magnetic steel (2), a main plywood (3) of a paramagnetic material and an additional magnetic steel (4), wherein the top of the additional magnetic steel (4) is connected with an additional main clamping plate (5) of the paramagnetic material. The top of the additional magnetic steel (4) is connected with the additional main clamping plate (5) of the paramagnetic material, and the additional main clamping plate (5) plays a part in permeance, so that the direction of the magnetic line of force of the additional magnetic steel (4) is changed, the front flux leakage of the additional magnetic steel (4) is reduced, the magnetic energy product generated by the additional magnetic steel (4) is more efficiency used, and the volume of the additional magnetic steel (4) can be reduced, therefore, the cost of the magnetic circuit is reduced. The additional magnetic steel (4) and the additional main clamping plate (5) are glued with each other and magnetize the additional magnetic steel (4), and the additional main clamping plate becomes the mark of the magnetizing direction of the additional magnetic steel (4), so that the problem of the error magnetizing direction of the additional magnetic steel (4) is solved. The internal magnetic type magnetic circuit system belongs to the field of a magnetic circuit system.
Description
Technical field
The utility model relates to a kind of magnetic circuit system, specifically is a kind of internal magnetization magnetic circuit system that is applied in the loudspeaker.
Background technology
Along with growth in the living standard, people are also more and more higher to the requirement of music tonequality.Using comparatively general magnetic circuit system in the loudspeaker at present is internal magnetization magnetic circuit system, usually (one of them is main magnet steel by a U iron, a bottom plate and 2 magnet steel, another is additional magnet steel), place U iron, main magnet steel, bottom plate, additional magnet steel from bottom to top successively.Existing internal magnetization magnetic circuit system, the leakage field in loudspeaker front is big, mainly be that additional magnet steel leakage field is big, additional magnet steel is exposed in the air fully, because the magnetic resistance of air is very big, therefore, has consumed a large amount of magnetic energy product of additional magnet steel, cause the required magnetic induction density B g of loudspeaker not reach required value, influence tonequality.In addition, improve magnetic gap magnetic induction density B g and coercivity H j, promptly can guarantee required magnetic induction density B g under the situation of the additional magnet steel volume of increase, but so just increase production cost.In addition, additional magnet steel does not have hand designations, is easy to generate the magnetizing direction mistake when magnetizing.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of and can reduce the front leakage field of additional magnet steel and the magnetic energy product that the additional magnet steel of more efficient use is produced, and reduce the internal magnetization magnetic circuit system of magnetic circuit cost.
The technical solution of the utility model is that internal magnetization magnetic circuit system comprises the bottom plate of U iron, main magnet steel, paramagnetic material, additional magnet steel from bottom to top, the additional clamping plate of described additional magnet steel top connection paramagnetic material.On additional magnet steel, connect an additional additional clamping plate, because the magnetic conduction effect of additional clamping plate, changed the magnetic line of force direction of additional magnet steel, the leakage field in loudspeaker front is significantly reduced, increased the magnetic flux density of magnetic gap simultaneously, the magnetic energy product of magnet steel is utilized effectively, can reduces the additional required size of magnet steel.
The beneficial effects of the utility model are: the additional clamping plate that connects a paramagnetic material at additional magnet steel top, because the magnetic conduction effect of additional clamping plate, changed the magnetic line of force direction of additional magnet steel, reduce the front leakage field of additional magnet steel, the magnetic energy product that the additional magnet steel of more efficient use is produced, can reduce the volume of additional magnet steel, thereby also reduce the cost of magnetic circuit.
As improvement, more additional magnet steel is magnetized after additional magnet steel and additional clamping plate are bonding, additional clamping plate becomes the sign of additional magnet steel magnetizing direction, has therefore just solved the problem that additional magnet steel magnetizing direction is made mistakes.
The appended drawings explanation
Fig. 1 be internal magnetization magnetic circuit of the present utility model system cross-sectional view.
Fig. 2 is the internal magnetization magnetic circuit system of prior art, Distribution of Magnetic Field figure after the analog computation.
Fig. 3 is a magnetic-type magnetic circuit system of the present utility model, Distribution of Magnetic Field figure after the analog computation.
Among the figure: 1.U iron, 2. main magnet steel, 3. bottom plate 4. adds magnet steel, 5 additional clamping plates.
Embodiment
Below be a kind of preferred embodiment of the utility model, but therefore do not limit protection range of the present utility model.
With reference to Fig. 1, internal magnetization magnetic circuit system, comprise the bottom plate 3 of U iron 1, main magnet steel 2, paramagnetic material, additional magnet steel 4 from bottom to top, the bonding additional clamping plate 5 in top at additional magnet steel 4, additional clamping plate 5 is the additional clamping plate 5 of paramagnetic material, size and thickness need cooperate with whole magnetic circuit system, through calculating, make additional clamping plate 5 can derive the S utmost point magnetic line of force of additional magnet steel 4 effectively to the side, the additional magnet steel 4 and the magnetic resistance of U iron 1 are reduced, can not cause the magnetic saturation of bottom plate 3 and additional clamping plate 4 simultaneously.
With reference to Fig. 2, Fig. 3, the simulation through computer calculates, and the front leakage field of the internal magnetization magnetic circuit system of prior art is 0.260755T; The front leakage field of internal magnetization magnetic circuit of the present utility model system is 0.0488453T, finds out significantly that thus the utility model system leakage field has only 1/5 of prior art systems leakage field; Improve magnetic line of force structure, reduced the third harmonic distortion that causes because of Nonlinear Magnetic Circuit.On producing, magnetize after additional magnet steel 4 and additional 5 clamping plate are earlier bonding, the magnetizing direction of magnet steel there is indicative function, made things convenient for operation.Because of the magnetic energy product of effective additional magnet steel 4 that utilizes, compared with prior art, reaching under the situation that requires the Bg value on an equal basis simultaneously, can reduce the volume of additional magnet steel 4, material cost is reduced.
Claims (2)
1. an internal magnetization magnetic circuit system comprises the bottom plate (3) of U iron (1), main magnet steel (2), paramagnetic material, additional magnet steel (4) from bottom to top, and it is characterized in that: described additional magnet steel (4) top connects the additional clamping plate (5) of a paramagnetic material.
2. internal magnetization magnetic circuit according to claim 1 system is characterized in that: described additional magnet steel (4) and bonding connection of additional clamping plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202171401U CN201839426U (en) | 2010-06-01 | 2010-06-01 | Internal magnetic type magnetic circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202171401U CN201839426U (en) | 2010-06-01 | 2010-06-01 | Internal magnetic type magnetic circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201839426U true CN201839426U (en) | 2011-05-18 |
Family
ID=44009527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202171401U Expired - Fee Related CN201839426U (en) | 2010-06-01 | 2010-06-01 | Internal magnetic type magnetic circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201839426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413405A (en) * | 2011-11-16 | 2012-04-11 | 瑞声声学科技(深圳)有限公司 | Magnetic circuit system and sound generation device using same |
-
2010
- 2010-06-01 CN CN2010202171401U patent/CN201839426U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413405A (en) * | 2011-11-16 | 2012-04-11 | 瑞声声学科技(深圳)有限公司 | Magnetic circuit system and sound generation device using same |
| CN102413405B (en) * | 2011-11-16 | 2014-06-04 | 瑞声声学科技(深圳)有限公司 | Magnetic circuit system and sound generation device using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO TONWEL AUDIO CO., LTD. Free format text: FORMER OWNER: NINGBO TONVER ELECTRONICS CO., LTD. Effective date: 20121130 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121130 Address after: 315191 Yinzhou District science and Technology Park, Ningbo Town, Zhejiang Patentee after: Ningbo Tonwel Audio Co., Ltd. Address before: 315191 Ningbo Province, Yinzhou District City, Jiang Shan town, West Road, No. 28, No. Patentee before: Ningbo Tonver Electronics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20180601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |