CN104157393A - Dual-shaft SQ type common mode filter - Google Patents
Dual-shaft SQ type common mode filter Download PDFInfo
- Publication number
- CN104157393A CN104157393A CN201410389339.5A CN201410389339A CN104157393A CN 104157393 A CN104157393 A CN 104157393A CN 201410389339 A CN201410389339 A CN 201410389339A CN 104157393 A CN104157393 A CN 104157393A
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- mode filter
- reel
- type common
- magnetic core
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Abstract
The invention provides a dual-shaft SQ type common mode filter which comprises a closed magnetic circuit double-cylinder magnetic core and a base. Two cylinders of the closed magnetic circuit double-cylinder magnetic core are both sleeved with winding reels, the winding reels rotate around the cylinders, the closed magnetic circuit double-cylinder magnetic core is clamped on the base, and the base is provided with slots allowing the two winding reels to rotate. The dual-shaft SQ type common mode filter aims to lower manual cost, the novel structure formed by the two winding reels and the closed magnetic integral magnetic core SQ type combination is adopted by the dual-shaft SQ type common mode filter, the two winding reels are driven through a gear to carry out opposite direction winding, and an annular filter is replaced.
Description
Technical field
The present invention relates to a kind of Switching Power Supply common-mode filter, be specifically related to a kind of twin axle SQ type common-mode filter.
Background technology
The common-mode filter using in the Switching Power Supply of Ge great TV factory and Monitor factory at present, major part is the loop filter of use, because the large advantage of loop filter more than one:
Loop filter can be controlled integral thickness, the integral thickness requirement of LED TV market to TV now, although do not have the first two years numbness pursue ultra-thin, but whole TV market also has certain requirement to thickness requirement, these require be substantially height 15mm once, traditional ET,, UF type magnetic core make filter be difficult to or cannot reach this requirement.
Toroidal core processing cost is relatively cheap.Because annular only has one just can make, and the magnetic core of other shapes must have, a pair of could to form common mode inductance required, and in the time of moulding, because considering the marriage problem of two magnetic cores, also must increase grinding step (as minute surface magnetic core) and just can obtain higher magnetic permeability.But do not need so for toroidal core.
Toroidal core has higher effective permeability compared with other shape magnetic core.Because two pairing magnetic cores are in the time of assembling, operation all can not be eliminated the phenomenon of air gap in any case, therefore effective permeability ratio only has single enclosed shape magnetic core low.
Based on above three large advantages, the common-mode filter majority that each large TV and Monitor manufacturer are used in Switching Power Supply is annular common mode filter.In this occupation mode situation that Chinese population bonus is quite sufficient in the past, it is good selection.But, in the recruitment famine of recent years and the rise situation of cost of labor, show gradually the drawback of this selection.Because under the winding process present circumstances in the production process of loop filter, cannot use automatic equipment operation.
Summary of the invention
The problem existing for prior art, the object of the present invention is to provide a kind of twin axle SQ type common-mode filter that can replace loop filter.
For achieving the above object, the invention provides a kind of twin axle SQ type common-mode filter, comprise closed magnetic circuit bicylindrical magnetic core and base, on two cylinders of described closed magnetic circuit bicylindrical magnetic core, all cover has reel, described reel rotates around described cylinder, described closed magnetic circuit bicylindrical magnetic core is stuck on described base, has the fluting rotating for two described reels on described base.
Preferably, stretch out and formative gear in the one or both ends of described reel outer rim.
Preferably, described reel is a point half formula reel, and described point of half formula reel is relatively buckled on described cylinder and by adhesive tape and is intertwined.
Preferably, also comprise collar, described collar is stuck on described point half formula reel, and described reel is separated out two winding slots by described collar.
Preferably, be provided with isolation skeleton on described base, described isolation skeleton is arranged between the fluting rotating for two described reels.
The object of twin axle SQ type common-mode filter provided by the invention is to reduce cost of labor, twin axle SQ type common-mode filter, adopt two rolls to add the new structure that closed magnetic circuit whole magnetic core SQ type combines, by the coiling in the other direction simultaneously of gear driven two rolls, replace loop filter.
Brief description of the drawings
Fig. 1 is the structural representation of twin axle SQ type common-mode filter of the present invention;
Fig. 2 is the understructure schematic diagram of twin axle SQ type common-mode filter of the present invention;
Fig. 3 is the structural representation that the closed magnetic circuit bicylindrical magnetic core of twin axle SQ type common-mode filter of the present invention is equipped with reel;
Fig. 4 is point half structural representation of point half formula reel of twin axle SQ type common-mode filter of the present invention.
In figure: 1-closed magnetic circuit bicylindrical magnetic core, 2-base, 3-gear, 4-divides half formula reel, 5-collar, 6-winding slot, 7-isolates skeleton, 8-fluting.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further:
Please refer to Fig. 1) Fig. 3, Fig. 1 is the structural representation of twin axle SQ type common-mode filter of the present invention, Fig. 2 is the understructure schematic diagram of twin axle SQ type common-mode filter of the present invention, and Fig. 3 is the structural representation that the closed magnetic circuit bicylindrical magnetic core of twin axle SQ type common-mode filter of the present invention is equipped with reel.
A kind of twin axle SQ type common-mode filter, comprise closed magnetic circuit bicylindrical magnetic core 1 and base 2, on two cylinders of described closed magnetic circuit bicylindrical magnetic core 1, all cover has reel, described reel rotates around described cylinder, described closed magnetic circuit bicylindrical magnetic core 1 is stuck on described base 2, has the fluting 8 rotating for two described reels on described base 2.
Stretch out and formative gear 3 in the one or both ends of described reel outer rim.
Please refer to Fig. 4, Fig. 4 is point half structural representation of point half formula reel of twin axle SQ type common-mode filter of the present invention.
Described reel is a point half formula reel 4, and described point of half formula reel 4 is relatively buckled on described cylinder and by adhesive tape and is intertwined.
Also comprise collar 5, described collar 5 is stuck on described point half formula reel 4, and described reel is separated out two winding slots 6 by described collar 5.
On described base 2, be provided with isolation skeleton 7, described isolation skeleton 7 is arranged between the fluting 8 rotating for two described reels.
Twin axle SQ type common-mode filter, mainly on square shape SQ magnetic core, to use two reels, when coiling, adopt the incorgruous rotation simultaneously of twin shaft coiling to form, engage by the gear 3 of two reel ends and the driven wheel 3 of two synchronous backwards, the synchronous counter rotating of reel is wound the line, winding efficiency improves greatly, and SQ type magnetic core has identical advantage (to have higher effective permeability with toroidal core; That the relatively combined magnetic core of magnetic core processing cost is wanted is cheap a lot, particularly needs mirror process; Can meet whole height below 15mm).The effect that uses two reels and collar 5 is set is in the volume limited and height situation, to wind the line window maximized, meet higher impedance requirement, make EMI better effects if, ensure the isolation of primary coil and secondary coil by isolation skeleton 7, whole base 2 integrated moldings, are beneficial to automated production, reduce costs improving product advantage.
Above-described embodiment is only for the invention example is clearly described, and the not restriction to the invention embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all execution modes.All any apparent variations of being extended out within the spirit and principles in the present invention or variation are still among the protection range in the invention claim.
Claims (5)
1. a twin axle SQ type common-mode filter, it is characterized in that, comprise closed magnetic circuit bicylindrical magnetic core and base, on two cylinders of described closed magnetic circuit bicylindrical magnetic core, all cover has reel, described reel rotates around described cylinder, described closed magnetic circuit bicylindrical magnetic core is stuck on described base, has the fluting rotating for two described reels on described base.
2. twin axle SQ type common-mode filter according to claim 1, is characterized in that, stretches out and formative gear in the one or both ends of described reel outer rim.
3. twin axle SQ type common-mode filter according to claim 2, is characterized in that, described reel is a point half formula reel, and described point of half formula reel is relatively buckled on described cylinder and by adhesive tape and is intertwined.
4. twin axle SQ type common-mode filter according to claim 3, is characterized in that, also comprises collar, and described collar is stuck on described point half formula reel, and described reel is separated out two winding slots by described collar.
5. twin axle SQ type common-mode filter according to claim 4, is characterized in that, is provided with isolation skeleton on described base, and described isolation skeleton is arranged between the fluting rotating for two described reels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410389339.5A CN104157393A (en) | 2014-08-08 | 2014-08-08 | Dual-shaft SQ type common mode filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410389339.5A CN104157393A (en) | 2014-08-08 | 2014-08-08 | Dual-shaft SQ type common mode filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104157393A true CN104157393A (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410389339.5A Pending CN104157393A (en) | 2014-08-08 | 2014-08-08 | Dual-shaft SQ type common mode filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN104157393A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104637654A (en) * | 2015-02-15 | 2015-05-20 | 上海继顺磁性材料有限公司 | Core for electronic transformers and electronic transformer comprising same |
| CN105731180A (en) * | 2016-04-28 | 2016-07-06 | 赵士立 | Bidirectional controllable cable winding driving device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134590A (en) * | 1995-02-03 | 1996-10-30 | 株式会社村田制作所 | Choke coil |
| CN1080446C (en) * | 1996-05-20 | 2002-03-06 | 株式会社村田制作所 | Choke coil for suppressing common-mode noise and normal-mode noise |
| CN2745198Y (en) * | 2004-06-28 | 2005-12-07 | 施学铭 | A power filter |
| US20090278652A1 (en) * | 2008-05-08 | 2009-11-12 | Tdk Corporation | Coil component |
| CN201556510U (en) * | 2009-06-08 | 2010-08-18 | 一诺科技股份有限公司 | Frame-shaped inductance coil |
| CN101840766A (en) * | 2009-03-19 | 2010-09-22 | Tdk株式会社 | The manufacture method of coil component, transformer, switching power unit and coil component |
| CN201796674U (en) * | 2010-09-10 | 2011-04-13 | 东莞创慈磁性元件有限公司 | Improved structure of common mode coil |
-
2014
- 2014-08-08 CN CN201410389339.5A patent/CN104157393A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134590A (en) * | 1995-02-03 | 1996-10-30 | 株式会社村田制作所 | Choke coil |
| CN1080446C (en) * | 1996-05-20 | 2002-03-06 | 株式会社村田制作所 | Choke coil for suppressing common-mode noise and normal-mode noise |
| CN2745198Y (en) * | 2004-06-28 | 2005-12-07 | 施学铭 | A power filter |
| US20090278652A1 (en) * | 2008-05-08 | 2009-11-12 | Tdk Corporation | Coil component |
| CN101840766A (en) * | 2009-03-19 | 2010-09-22 | Tdk株式会社 | The manufacture method of coil component, transformer, switching power unit and coil component |
| CN201556510U (en) * | 2009-06-08 | 2010-08-18 | 一诺科技股份有限公司 | Frame-shaped inductance coil |
| CN201796674U (en) * | 2010-09-10 | 2011-04-13 | 东莞创慈磁性元件有限公司 | Improved structure of common mode coil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104637654A (en) * | 2015-02-15 | 2015-05-20 | 上海继顺磁性材料有限公司 | Core for electronic transformers and electronic transformer comprising same |
| CN105731180A (en) * | 2016-04-28 | 2016-07-06 | 赵士立 | Bidirectional controllable cable winding driving device |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20141119 |