CN201796673U - Filtering inductor structure - Google Patents
Filtering inductor structure Download PDFInfo
- Publication number
- CN201796673U CN201796673U CN201020244223XU CN201020244223U CN201796673U CN 201796673 U CN201796673 U CN 201796673U CN 201020244223X U CN201020244223X U CN 201020244223XU CN 201020244223 U CN201020244223 U CN 201020244223U CN 201796673 U CN201796673 U CN 201796673U
- Authority
- CN
- China
- Prior art keywords
- filter inductance
- inductance structure
- iron
- core
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides a filtering inductor structure which is used for being embedded in a pit of a circuit board. The filtering inductor structure comprises an insulating shell and two iron core bodies, wherein the insulating shell comprises a containing channel and two symmetrical winding brackets; each bobbin bracket comprises at least two winding blocks, a plurality of high-voltage baffle plates, and a plurality of pins; each winding block is wound with a plurality of turns of coils; the high-voltage baffle plates are used for isolating coils on the winding blocks; the containing channel passes through the two winding brackets; and when the two iron core bodies are respectively inserted in the two ends of the containing channel, the winding blocks and the high-voltage baffle plates are surrounded by the iron core bodies. The pins are arranged at the outer sides of the insulating shell and hook the circuit board, thus leading the insulating shell and the iron core bodies to be positioned in the pit and have approximately same horizontal height with the circuit, and having the advantage of thinned type.
Description
Technical field
The utility model relates to a kind of filter inductance structure, particularly a kind of filter inductance structure with slimming effect.
Background technology
Mixed various high-frequency circuits, digital circuit and analog circuit on the mainboard of computer-internal, their work the time can produce a large amount of frequency electromagnetic waves and interfere with each other, Here it is EMI (Electromagnetic interference).Generally speaking, wiring that EMI can be by mainboard or external cable and outwards emission causes the electromagnetic radiation pollution of periphery, this not only can influence other electronic equipment operate as normal, also may be harmful.
In order to eliminate or reduce the interference of EMI, can adopt a kind of filter inductance structure that is called common mode inductance (Common modeChoke) usually, in order to the electromagnetic interference signal in the filtration computer, and in order to suppress the electromagenetic wave radiation that HW High Way produces.Referring to Figure 1A, Figure 1A is the operation principle schematic diagram of known filter inductance structure.Shown in Figure 1A, a filter inductance structure 9 surrounds into multiturn coil 921 by a lead 92 respectively at the right and left of an iron core 91.These coils 921 are centered around on the same iron core 91, and the number of turn, phase place are all identical, but opposite around circle direction and the right coil 921 of left side coil 921 around the circle direction.So when the normal current in the circuit was flowed through this filter inductance structure 9, electric current was owing to cancelling out each other in the magnetic field 8 that the inductance coil 921 of same-phase coiling is produced.Thus, when common mode current flowing through coil 921, because the same tropism of common mode current, understand the induction reactance that in coil 921, produces magnetic field 8 in the same way and increase coil 921, make coil 921 show as high impedance, produce stronger damping, with this attenuation common-mode electric current, reach the purpose of filtering.
Aforesaid filter inductance structure 9 comes down to a bidirectional filter: on the one hand can the online common mode electromagnetic interference of filtered signal, can also inhibition itself outwards not send electromagnetic interference on the other hand, avoid influencing the operate as normal of other electronic equipments under the same electromagnetic environment; Therefore this filter inductance structure 9 is widely used in the electronic equipment.
Yet because the volume of this filter inductance structure 9 is bigger, thickness is thicker, therefore is unfavorable for the requirement of present electronic building brick miniaturization, slimming.Referring to Figure 1B, Figure 1B is the assembly assumption diagram of known filter inductance structure.Shown in Figure 1B, this filter inductance structure 9 and this iron core size on x axle, y axle, z axle is all too big, if this filter inductance structure 9 is mounted on the circuit board (not shown), no matter by any way or any direction setting, all can't satisfy the requirement of slimming.In addition, traditional filter inductance structure 9 be with manual type implement lead 92 around circle, so man-hour is longer, cost is higher, difficult quality keyholed back plate, and inefficiency.
The utility model content
The utility model main purpose is to make the filter inductance structure have the effect of slimming with combining of circuit board.
Another purpose of the utility model is to improve the shortcoming of known artificial coiling, shortens man-hour thus, enhances productivity, and improves qualification rate, reduces cost.
In order to reach above-mentioned purpose, the utility model provides a kind of filter inductance structure, in the pothole that embeds a circuit board, it is characterized in that, this filter inductance structure comprises an insulation shell and two iron-core workpieces; This insulation shell comprises a holding channel and two symmetrical drum stands, two drum stands spacing of being separated by, each drum stand comprises at least two coiling blocks, a plurality of high pressure dividing plates and a plurality of pin, twine multiturn coil on described a plurality of coiling block, multiturn coil on the same drum stand identical around the circle direction, multiturn coil on the different drum stand opposite around the circle direction, described a plurality of high pressure dividing plate is arranged at this coiling block periphery, in order to isolate the coil on this coiling block, this holding channel passes two drum stands, and with this coiling block, the high pressure dividing plate, coil is isolated, each iron-core workpiece comprises that a cross section presents the main iron core of flat, when the main iron core of two iron-core workpieces was inserted the two ends of this holding channel respectively, this iron-core workpiece centered on described a plurality of coiling blocks and high pressure dividing plate.Wherein, described a plurality of pins are arranged at this insulation shell outside and catch on this circuit board, make this insulation shell, iron-core workpiece be positioned at this pothole and are the par height with this circuit board.
Coiling block, high pressure dividing plate and pin on the aforesaid filter inductance structure, two drum stands is center and symmetrical with this spacing.
Aforesaid filter inductance structure, this iron-core workpiece and described a plurality of high pressure dividing plate are the close-fitting state and connect.
Aforesaid filter inductance structure, when the main iron core of two iron-core workpieces was inserted by the two ends of this holding channel respectively, two main iron cores kept a distance and not contact.
Aforesaid filter inductance structure, two main iron cores present the sliding state of joining in this holding channel.
Aforesaid filter inductance structure, the cross section of this holding channel is corresponding with this main iron core and present flat.
Aforesaid filter inductance structure comprises a plurality of slots that are arranged at this pothole periphery on this circuit board, each slot is corresponding with a pin, and described a plurality of pins inject in this slot and this filter inductance structure is fixed.
Aforesaid filter inductance structure, described a plurality of pins are welded on the sidewall of this pothole to fix this filter inductance structure.
Thus, filter inductance structure described in the utility model can utilize coil winding machine implement lead around circle, in order to replace manual operation, therefore can shorten man-hour, enhance productivity, improve qualification rate, reduce cost.In addition, this filter inductance structure is because comparatively flat, and can embed in the pothole of this circuit board, therefore has the advantage of slimming.
Description of drawings
Figure 1A is the operation principle schematic diagram of known filter inductance structure.
Figure 1B is the assembly assumption diagram of known filter inductance structure.
Fig. 2 A is the structure chart of the filter inductance structure of the utility model first embodiment.
Fig. 2 B is the side sectional view of the filter inductance structure of the utility model first embodiment.
Fig. 3 A is the structure chart of the filter inductance structure of the utility model second embodiment.
Fig. 3 B is the side sectional view of the filter inductance structure of the utility model second embodiment.
In the accompanying drawing, the component list of each label representative is as follows:
8 magnetic fields;
9 filter inductance structures, 91 iron cores, 92 leads, 921 coils;
1,2 filter inductance structures;
11,21 iron-core workpieces, 111,211 main iron cores, 112,212 secondary iron cores, 12 leads, 121,221 coils, 13,23 insulation shells, 131,231 high pressure dividing plates, 132,232 coiling blocks, 133,233 pins, 134,234 drum stands, 135 holding channels;
7 circuit boards, 71 slots, 72 potholes, 73 scolders;
The D1 spacing.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Referring to Fig. 2 A, Fig. 2 A is the structure chart of the filter inductance structure of the utility model first embodiment.Shown in Fig. 2 A, filter inductance structure 1, it is in order in the pothole 72 that embeds circuit board 7.This filter inductance structure 1 comprises insulation shell 13 and two iron-core workpieces 11; This insulation shell 13 comprises two drum stands 134 and 135, two drum stands 134 of holding channel space D 1 of being separated by.Each drum stand 134 comprises two coilings block 132, a plurality of high pressure dividing plate 131 and a plurality of pins 133; These high pressure dividing plates 131 are arranged at this coiling block 132 peripheries, and each coiling block 132 is all separated with the coiling block 132 on next door.These pins 133 are the shape of bending, and are arranged at this insulation shell 13 outsides.This holding channel 135 passes two drum stands 134, and isolated with this coiling block 132, high pressure dividing plate 131.
Each iron-core workpiece 11 comprises main iron core 111 and two secondary iron cores 112, and the cross section of this main iron core 111 presents flat, and the height of this pair iron core 112 roughly is higher than this drum stand 134 and this high pressure dividing plate 131.This iron-core workpiece 11 can combine with this insulation shell 13; Shown in Fig. 2 A, when the main iron core 111 of two iron-core workpieces 11 was inserted the two ends of this holding channel 135 respectively, this iron-core workpiece 11 can the block 132 that should wind the line, high pressure dividing plate 131 center on by these secondary iron cores 112.Pothole 72 peripheries at this circuit board 7 are provided with a plurality of slots 71, and each slot 71 is corresponding with a pin 133.
Next referring to Fig. 2 B, Fig. 2 B is the side sectional view of the filter inductance structure of first embodiment of the invention.Shown in Fig. 2 B, please be simultaneously with reference to Fig. 2 A; Separate by this space D 1 between the drum stand 134 on the left side and the drum stand 134 on the right, and two drum stand 134 left and right sides are symmetrical; In addition, coiling block 132, high pressure dividing plate 131 and the pin 133 on two drum stands 134 is center and the left and right sides is symmetrical with this space D 1 also.On these coiling blocks 132, twine multiturn coil 121, the multiturn coil 121 on the same drum stand 134 identical, the multiturn coil 121 on the different drum stand 134 opposite around the circle direction around the circle direction; That is: the lead 12 of the right and left, its lambda line is identical, and direction is opposite; Therefore, the opposing magnetic field that can pass through to be produced reaches damping, and attenuation common-mode electric current thus reaches the purpose of filtering.The two ends, the left and right sides of each coiling block 132 all are provided with a high pressure dividing plate 131, these high pressure dividing plates 131 have been isolated the coil 121 on each coiling block 132, its purpose is moderately to increase leakage inductance, the inductance value that this leakage inductance is produced can also have the characteristic of differential mode (Difference Mode) inductance simultaneously, can suppress differential mode noise.In addition, this holding channel 135 is also isolated with these coils 121, thus, in the time of in this main iron core 111 is inserted into this holding channel 135, can avoids these coils 121 and the 11 mutual short arcs discharges of this iron-core workpiece or cause high-voltage breakdown.In addition, because the structure of this insulation shell 13 is fixed, therefore can utilize coil winding machine to implement winding operation, and multiturn coil 121 is wrapped on this drum stand 134, improve the shortcoming of known artificial coiling, shorten man-hour, enhance productivity, improve qualification rate, reduce cost.
On this insulation shell 13, finish coil 121 after circle, simultaneously referring to Fig. 2 A and Fig. 2 B, the main iron core 111 of two iron-core workpieces 11 is inserted by the two ends of this holding channel 135, again four pins 133 are aimed at four slots 71 respectively, this filter inductance structure 1 can be fixed in the pothole 72 of this circuit board 7.Thus, this iron-core workpiece 11 can be finished the assembling of this filter inductance structure 1 around the periphery of these drum stands 134, coiling block 132, high pressure dividing plate 131 and coil 121.In a preferred embodiment, this iron-core workpiece 11 presents the close-fitting state with these high pressure dividing plates 131 and connects, and this iron-core workpiece 11 is combined closely with this insulation shell 13 and can not come off.In addition, two main iron cores 111 present to slide in this holding channel 135 joins state, can make things convenient for the insertion operation of this main iron core 111.In addition, the cross section of this holding channel 135 and this main iron core 111 are corresponding and be flat, can reduce waste meaningless on the space thus.Certainly, when two main iron cores 111 were inserted in the two ends of this holding channel 135, also visual situation kept a distance and not contact between two main iron cores 111, in order to moderately to increase leakage inductance.
After assembling is finished, these pins 133 are inserted in this slot 71, utilize these pins 133 to catch on this circuit board 7 and this filter inductance structure 1 is fixing, make this insulation shell 13, iron-core workpiece 11 be positioned at this pothole 72 simultaneously and roughly present the par height with this circuit board 7.Thus, because this filter inductance structure 1 is suitable with the thickness of this circuit board 7, and this insulation shell 13, iron-core workpiece 11 all be positioned at this pothole 72, so can reach the requirement of slimming.
Next introduce other embodiment.Referring to Fig. 3 A, Fig. 3 A is the structure chart of the filter inductance structure of the utility model second embodiment.As shown in Figure 3A, this filter inductance structure 2 is in the pothole (not shown among Fig. 3 A) that embeds a circuit board.This filter inductance structure 2 comprises insulation shell 23 and two iron-core workpieces 21; This insulation shell 23 comprises two drum stands 234, a plurality of high pressure dividing plate 231 and a plurality of pin 233.Wherein, the iron-core workpiece 21 of present embodiment comprises main iron core 211 and secondary iron core 212, and the cross section of this main iron core 211 presents flat, and the height of this pair iron core 212 roughly is higher than this drum stand 234 and this high pressure dividing plate 231.
Referring to Fig. 3 A and Fig. 3 B, Fig. 3 B is the side sectional view of the filter inductance structure of the utility model second embodiment simultaneously.Shown in Fig. 3 B, center on multiturn coil 221 on the insulation shell 23 of this filter inductance structure 2.In the present embodiment, each drum stand 234 comprises three coiling blocks 232; In addition, a plurality of pins 233 are welded on the sidewall of this pothole 72 by scolder 73, thereby fix this filter inductance structure 2.Thus, the filter inductance structure 2 of present embodiment also can reach above-mentioned effect.
In sum, filter inductance structure described in the utility model can utilize coil winding machine implement lead around circle, in order to replace manual operation, therefore can shorten man-hour, enhance productivity, improve qualification rate, reduce cost.In addition, this filter inductance structure is because comparatively flat, and can embed in the pothole of this circuit board, therefore has the advantage of slimming.
The above only is a preferred embodiment of the present utility model, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
1. a filter inductance structure in the pothole that embeds a circuit board, is characterized in that, this filter inductance structure comprises:
One insulation shell, this insulation shell comprises a holding channel and two symmetrical drum stands, two drum stands spacing of being separated by, each drum stand comprises at least two coiling blocks, a plurality of high pressure dividing plates and a plurality of pin, twine multiturn coil on described a plurality of coiling block, multiturn coil on the same drum stand identical around the circle direction, multiturn coil on the different drum stand opposite around the circle direction, described a plurality of high pressure dividing plate is arranged at this coiling block periphery, in order to isolate the coil on this coiling block, this holding channel passes two drum stands, and with this coiling block, the high pressure dividing plate, coil is isolated;
Two iron-core workpieces, each iron-core workpiece comprise that a cross section presents the main iron core of flat, and when the main iron core of two iron-core workpieces was inserted the two ends of this holding channel respectively, this iron-core workpiece centered on described a plurality of coiling blocks and high pressure dividing plate;
Wherein, described a plurality of pins are arranged at this insulation shell outside and catch on this circuit board, make this insulation shell, iron-core workpiece be positioned at this pothole and present the par height with this circuit board.
2. filter inductance structure as claimed in claim 1 is characterized in that, coiling block, high pressure dividing plate and the pin on two drum stands is center and symmetrical with described spacing.
3. filter inductance structure as claimed in claim 1 is characterized in that, this iron-core workpiece and described a plurality of high pressure dividing plate present the close-fitting state and connect.
4. filter inductance structure as claimed in claim 1 is characterized in that, when the main iron core of two iron-core workpieces was inserted by the two ends of this holding channel respectively, two main iron cores kept a distance and not contact.
5. filter inductance structure as claimed in claim 1 is characterized in that, two main iron cores present the sliding state of joining in this holding channel.
6. filter inductance structure as claimed in claim 1 is characterized in that, the cross section of this holding channel is corresponding with this main iron core and present flat.
7. filter inductance structure as claimed in claim 1 is characterized in that, comprises a plurality of slots that are arranged at this pothole periphery on this circuit board, and each slot is corresponding with a pin, and described a plurality of pins inject in this slot and this filter inductance structure is fixed.
8. filter inductance structure as claimed in claim 1 is characterized in that, described a plurality of pins are welded on the sidewall of this pothole to fix this filter inductance structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020244223XU CN201796673U (en) | 2010-06-29 | 2010-06-29 | Filtering inductor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020244223XU CN201796673U (en) | 2010-06-29 | 2010-06-29 | Filtering inductor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201796673U true CN201796673U (en) | 2011-04-13 |
Family
ID=43851576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020244223XU Expired - Fee Related CN201796673U (en) | 2010-06-29 | 2010-06-29 | Filtering inductor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201796673U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE47423E1 (en) | 2015-04-23 | 2019-06-04 | Chicony Power Technology Co., Ltd. | Integrated power-converting module |
| US10770981B2 (en) | 2015-04-23 | 2020-09-08 | Chicony Power Technology Co., Ltd. | Voltage conversion module and bobbin |
-
2010
- 2010-06-29 CN CN201020244223XU patent/CN201796673U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE47423E1 (en) | 2015-04-23 | 2019-06-04 | Chicony Power Technology Co., Ltd. | Integrated power-converting module |
| US10770981B2 (en) | 2015-04-23 | 2020-09-08 | Chicony Power Technology Co., Ltd. | Voltage conversion module and bobbin |
| US10951123B2 (en) | 2015-04-23 | 2021-03-16 | Chicony Power Technology Co.. Ltd. | Power conversion system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102447154A (en) | Branching device | |
| CN202905391U (en) | Common mode inductor | |
| CN105390241A (en) | Composite magnetic component | |
| CA3040912A1 (en) | Enhanced common mode current reduction in three-phase inductors, transformers, and motor drive systems | |
| CN101854152A (en) | Planar electromagnetic interference (EMI) filter integration module consisting of circular printed circuit board (PCB) wire turns | |
| CN201796673U (en) | Filtering inductor structure | |
| US9252735B2 (en) | Network signal coupling and EMI protection circuit | |
| RU2533640C2 (en) | Information protection device | |
| CN205385404U (en) | Three -phase common mode filter circuit and wave filter | |
| CN101399114B (en) | Multiple magnetic circuit transformer | |
| CN201780841U (en) | Filter inductor structure | |
| CN205810511U (en) | A kind of common mode inductance | |
| CN101986400A (en) | Integrated inductor based on differential mode and common mode filtering | |
| CN205407757U (en) | EMI wave filter of electric power automation equipment | |
| CN210041770U (en) | High-low frequency band filtering device and electrical equipment | |
| JP2006186620A (en) | Line filter | |
| CN104702234A (en) | Electromagnetic interference filter applicable to high-voltage Hall sensors | |
| CN203910415U (en) | Differential-common-mode inductor and inverter comprising inductor | |
| CN113782310A (en) | Common mode inductor | |
| CN201812626U (en) | Inductance structure | |
| CN101420842B (en) | Equipment for reducing overproof radiation caused by electricity power line | |
| CN110601516A (en) | Filtering device, power supply and filtering method thereof | |
| CN203617062U (en) | SMD (Surface Mounted Device) winding type common-mode power inductor | |
| CN204360899U (en) | A kind of common mode inductance winding structure | |
| CN212934305U (en) | Common mode inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20120629 |