CN205194477U - A magnetic core for compounding inductance - Google Patents
A magnetic core for compounding inductance Download PDFInfo
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- CN205194477U CN205194477U CN201520976596.9U CN201520976596U CN205194477U CN 205194477 U CN205194477 U CN 205194477U CN 201520976596 U CN201520976596 U CN 201520976596U CN 205194477 U CN205194477 U CN 205194477U
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- magnetic core
- inductance
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Abstract
The utility model discloses a magnetic core for compounding inductance, it is including annular magnetic core main part, the inside wall of magnetic core main part is formed with the bulge of two relative extensions, the both sides of bulge just are in be formed with the wire winding portion that is used for the coilling in the magnetic core main part respectively, magnetic core main part and bulge integrated into one piece, and have the space between two bulges. The utility model discloses as an organic wholeization of magnetic core structure, not only the magnetic inductivity is high, easily production shaping moreover, suitable automated production.
Description
Technical field
The utility model relates to filter inductance technical field, particularly relates to a kind of magnetic core for compound inductance.
Background technology
At present, the EMI clutter of complete electronic set is easily scurried into electrical network and forms pollution to electrical network, if the EMI clutter in electrical network scurries into complete electronic set, also can cause complete electronic set job insecurity.To this, countries in the world have all been put into effect relevant technical standard and have been carried out detected electrons complete machine and whether reach relevant EMI and limit specification, and product not up to standard can not commercially sell.So Most electronic product is in order to by relevant EMI certification, all can design an electromagnetic interface filter, generally be placed on civil power wiring input or be integrated in the input of power panel.
In electromagnetic interface filter or module, filter inductance is its important component part, and the quality of its performance determines the performance of whole electromagnetic interface filter to a great extent.The EMI clutter of complete electronic set not only comprises common mode disturbances, also differential mode interference is comprised, two kinds of interference mix together, be difficult to explanation, the electromagnetic interface filter of high-quality or module then requirement can be disturbed by filtering common mode, again can filtering differential mode interference, therefore common mode inductance has become the requisite magnetic element of high-quality filter power supply device with differential mode inductance, but, existing common mode inductance has again the filter power supply device volume of poor inductance large, cost is high, and thus finding a kind of common mode differential mode compound inductance having common and different mode concurrently becomes inevitable, and magnetic core is the core of inductance.
Shown in composition graphs 4 and Fig. 5, existing common and different mode compound inductance magnetic core is generally the EE type combination of two E shape magnetic cores 100, or be the combination of toroidal core 101 and magnetic bridge 102, wherein, the combination of EE type is put together by two magnetic cores, due to the seamed gap of contact end face of the two, so permeability is relatively low, and although toroidal core 101 and the combination of magnetic bridge 102 have high magnetic permeability, but use two molds, production difficulty is large, and they are all not suitable for being applied in from changing in the compound inductance produced.
Utility model content
The technical problems to be solved in the utility model is, for the deficiencies in the prior art, provide a kind of magnetic core for compound inductance, this magnetic core is integrated, and not only permeability is high, and is easy to producing shaped, applicable automated production.
For solving the problems of the technologies described above, the utility model adopts following technical scheme.
A kind of magnetic core for compound inductance, it includes the magnetic core main body of annular, the madial wall of described magnetic core main body is formed with two protuberances relatively extended, the both sides of described protuberance and the winding section be formed respectively in described magnetic core main body for coiling, described magnetic core main body and protuberance one-body molded, and there is space between two protuberances.
Preferably, the end opens of described protuberance is fluted, and the opening of two grooves is relative.
Preferably, the cross section of described winding section is circular.
Preferably, the cross section of described winding section is octagon.
Preferably, the surface of described magnetic core main body scribbles insulating barrier.
Preferably, the described magnetic core main body side of being annular or annular.
In magnetic core disclosed in the utility model, magnetic core main body and protuberance are integrated, and add man-hour, only need one set of die can punch forming, effectively reduce difficulty of processing and improve production efficiency, simultaneously, this magnetic core can prevent from producing seam because of splicing, and then has good permeability.Based on above-mentioned characteristic, parasitic capacitance is low, high frequency performance good, size is little, high-quality and be applicable to the wideband EMI filtering compound inductance of automated production to make the utility model magnetic core be applicable to being applied to.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model magnetic core.
Fig. 2 is the cutaway view along A-A line in Fig. 1.
Fig. 3 is the structure chart after the utility model magnetic core coiling.
Fig. 4 is the structure chart one of existing magnetic core.
Fig. 5 is the structure chart two of existing magnetic core.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in more detail.
The utility model discloses a kind of magnetic core for compound inductance, shown in composition graphs 1 to Fig. 3, it includes the magnetic core main body 1 of annular, the madial wall of described magnetic core main body 1 is formed with two protuberances 2 relatively extended, the both sides of described protuberance 2 and the winding section 3 be formed respectively in described magnetic core main body 1 for coiling 6, described magnetic core main body 1 is one-body molded with protuberance 2, and there is space 4 between two protuberances 2.
In above-mentioned magnetic core, magnetic core main body 1 and protuberance 2 are integrated, and add man-hour, only need one set of die can punch forming, effectively reduce difficulty of processing and improve production efficiency, simultaneously, this magnetic core can prevent from producing seam because of splicing, and then has good permeability.Based on above-mentioned characteristic, parasitic capacitance is low, high frequency performance good, size is little, high-quality and be applicable to the wideband EMI filtering compound inductance of automated production to make the utility model magnetic core be applicable to being applied to.
In practical application, described magnetic core main body 1 can the side's of being annular or annular.
The utility model is after coiling, be formed with two magnetic circuits, a main magnetic circuit forms common mode sensibility reciprocal, two points of magnetic circuits form differential mode inductance, and require that the number of turn of in magnetic core main body 1 two groups of coils 6, phase place, winding mode are all identical, during coiling, both can be common winding, also can be that flat wire founds winding.
Further, the end opens fluted 5 of described protuberance 2, the opening of two grooves 5 is relative.Due to the existence of groove 5, adding the space at space 4 place, by adjusting the size in this space 4, effectively controlling the magnetic permeability of point magnetic circuit, guarantee that point magnetic circuit can not be saturated.
In the present embodiment, the cross section of described winding section 3 is circular.But in other embodiments of the present utility model, the cross section of described winding section 3 can also be octagon.
In the present embodiment, the surface of described magnetic core main body 1 scribbles insulating barrier.But in another embodiment of the present utility model, in order to play insulating effect, the insulation that this magnetic core main body can also be contained in plastic cement makes is protected in box.
In actual applications, described magnetic core main body 1 can select different magnetic materials and different sintering process according to the needs of design, and then reaches required inductance coefficent.According to the needs of sintering process, this magnetic core can be two identical half block magnetic cores and is formed by stacking.
The above is the utility model preferred embodiment, is not limited to the utility model, all make in technical scope of the present utility model amendment, equivalent to replace or improvement etc., all should be included in scope that the utility model protects.
Claims (6)
1. the magnetic core for compound inductance, it is characterized in that, include the magnetic core main body of annular, the madial wall of described magnetic core main body is formed with two protuberances relatively extended, the both sides of described protuberance and the winding section be formed respectively in described magnetic core main body for coiling, described magnetic core main body and protuberance one-body molded, and there is space between two protuberances.
2., as claimed in claim 1 for the magnetic core of compound inductance, it is characterized in that, the end opens of described protuberance is fluted, and the opening of two grooves is relative.
3. as claimed in claim 1 for the magnetic core of compound inductance, it is characterized in that, the cross section of described winding section is circular.
4., as claimed in claim 1 for the magnetic core of compound inductance, it is characterized in that, the cross section of described winding section is octagon.
5., as claimed in claim 1 for the magnetic core of compound inductance, it is characterized in that, the surface of described magnetic core main body scribbles insulating barrier.
6. as claimed in claim 1 for the magnetic core of compound inductance, it is characterized in that, the described magnetic core main body side of being annular or annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520976596.9U CN205194477U (en) | 2015-11-30 | 2015-11-30 | A magnetic core for compounding inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520976596.9U CN205194477U (en) | 2015-11-30 | 2015-11-30 | A magnetic core for compounding inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205194477U true CN205194477U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520976596.9U Active CN205194477U (en) | 2015-11-30 | 2015-11-30 | A magnetic core for compounding inductance |
Country Status (1)
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| CN (1) | CN205194477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098321A (en) * | 2016-07-05 | 2016-11-09 | 海宁联丰东进电子有限公司 | A kind of assembly type multifunctional filter |
| CN111292931A (en) * | 2018-12-10 | 2020-06-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electronic equipment and filter inductor thereof |
-
2015
- 2015-11-30 CN CN201520976596.9U patent/CN205194477U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098321A (en) * | 2016-07-05 | 2016-11-09 | 海宁联丰东进电子有限公司 | A kind of assembly type multifunctional filter |
| CN106098321B (en) * | 2016-07-05 | 2017-12-19 | 海宁联丰东进电子有限公司 | A kind of assembly type multifunctional filter |
| CN111292931A (en) * | 2018-12-10 | 2020-06-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electronic equipment and filter inductor thereof |
| CN111292931B (en) * | 2018-12-10 | 2021-09-07 | 西门子电动汽车动力总成系统(上海)有限公司 | Electronic equipment and filter inductor thereof |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |