CN215069494U - Common mode inductor - Google Patents
Common mode inductor Download PDFInfo
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- CN215069494U CN215069494U CN202120013695.2U CN202120013695U CN215069494U CN 215069494 U CN215069494 U CN 215069494U CN 202120013695 U CN202120013695 U CN 202120013695U CN 215069494 U CN215069494 U CN 215069494U
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- magnetic ring
- common
- mode inductor
- common mode
- insulating
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Abstract
The utility model discloses a common mode inductance, including the magnetic ring, it has a plurality of independent coil winding each other to twine along its circumference direction on the magnetic ring, the inboard of magnetic ring has set firmly can be a plurality of coil winding is separated insulating barrier each other. The utility model has the advantages that: by using the nanocrystalline magnetic ring, the technical problems of low saturation induction intensity, narrow adjustment range, poor temperature stability, limited application range and the like of the conventional common mode inductor can be solved; common mode noise can be well inhibited, EMI harmonic waves are filtered, peaks generated by a switching power supply are absorbed, devices are prevented from being damaged by surge voltage, the size of a circuit is reduced, and the stability and reliability of a system are improved; the flat vertical winding copper wire is used, so that the heat dissipation performance is good, and the filter effect is better than that of the common enameled wire inductance; compared with the common enameled wire inductor, the surface of the enameled wire inductor is attractive.
Description
Technical Field
The utility model relates to an inductor technical field particularly, relates to a common mode inductance.
Background
The inductance coil has the characteristic of inhibiting current change, the effect is more obvious when the inductance is larger, the effect has the effect of resisting the current and is the inductive reactance, and the magnitude of the inductive reactance is related to the frequency thereof and the magnitude of the inductance thereof.
The current common mode inductor is mostly formed by winding an enameled wire, the inductance designed by the enameled wire influences the heat dissipation of the coil due to the concentrated wiring, and the enameled wire is wound in a cross mode, so that the filtering effect is poor and the use effect is influenced.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides a common mode inductor can solve current common mode inductor saturation magnetic induction and hang down, the adjustment range is narrow, temperature stability is poor, application scope receives technical problem such as restriction.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
a common mode inductor comprises a magnetic ring, wherein a plurality of independent coil windings are wound on the magnetic ring along the circumferential direction of the magnetic ring, and an insulating partition plate capable of separating the coil windings is fixedly arranged on the inner side of the magnetic ring.
Furthermore, the magnetic ring is a nanocrystalline magnetic ring.
Further, the coil winding is formed by winding flat copper wires.
Furthermore, an insulating bottom plate is arranged on one side of the magnetic ring in the axial direction, and two pins of the coil winding penetrate through the insulating bottom plate.
Further, the insulating bottom plate is an epoxy plate.
Furthermore, a plurality of square holes through which the pins of the coil winding can pass are formed in the insulating bottom plate, and colloid is filled between the square holes and the corresponding end portions of the flat copper wires.
Further, the inner side of the magnetic ring is in interference fit with the insulating partition plate.
Furthermore, one side of the insulating partition plate is provided with a convex limiting part, and the side face of the magnetic ring in the axial direction is in contact with the limiting part.
Furthermore, the insulating partition plate is made of plastic.
Further, the number of the coil windings is three.
The utility model has the advantages that: by using the nanocrystalline magnetic ring, the technical problems of low saturation induction intensity, narrow adjustment range, poor temperature stability, limited application range and the like of the conventional common mode inductor can be solved; common mode noise can be well inhibited, EMI harmonic waves are filtered, peaks generated by a switching power supply are absorbed, devices are prevented from being damaged by surge voltage, the size of a circuit is reduced, and the stability and reliability of a system are improved; the flat vertical winding copper wire is used, so that the heat dissipation performance is good, and the filter effect is better than that of the common enameled wire inductance; compared with the common enameled wire inductor, the surface of the enameled wire inductor is attractive.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an axial view of a common mode inductor according to an embodiment of the present invention;
fig. 2 is a front view of a common mode inductor according to an embodiment of the present invention;
fig. 3 is a bottom view of a common mode inductor according to an embodiment of the present invention.
In the figure:
1. a coil winding; 2. a magnetic ring; 3. an insulating spacer; 4. an insulating base plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in fig. 1-3, according to the embodiment of the present invention, a common mode inductor includes a magnetic ring 2, a plurality of coil windings 1 independent from each other are wound on the magnetic ring 2 along a circumferential direction thereof, and an insulating partition plate 3 capable of separating the plurality of coil windings 1 from each other is fixedly disposed on an inner side of the magnetic ring 2.
In a specific embodiment of the present invention, the magnetic ring 2 is a nanocrystalline magnetic ring.
In a specific embodiment of the present invention, the coil winding 1 is formed by winding a flat copper wire.
In a specific embodiment of the present invention, the magnetic ring 2 is provided with an insulating bottom plate 4 along one side in the axial direction thereof, and both pins of the coil winding 1 pass through the insulating bottom plate 4.
In a specific embodiment of the present invention, the insulating base plate 4 is an epoxy plate.
In a specific embodiment of the present invention, a plurality of square holes are formed on the insulating bottom plate 4, and the square holes are respectively used for the pins of the coil winding 1 to pass through, and the glue is filled between the square holes and the corresponding end portions of the flat copper wires.
In a specific embodiment of the present invention, the inner side of the magnetic ring 2 is in interference fit with the insulating partition 3.
In a specific embodiment of the present invention, one side of the insulating partition plate 3 is provided with a convex limiting portion, and the side of the magnetic ring 2 in the axial direction thereof is in contact with the limiting portion.
In a specific embodiment of the present invention, the insulating partition 3 is made of plastic.
In a specific embodiment of the present invention, the number of the coil windings 1 is three.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention will be described in detail through specific use modes.
The common mode inductor comprises a magnetic ring 2, a coil winding 1, an insulating partition plate 3 and an insulating bottom plate 4.
The magnetic ring 2 adopts a nanocrystalline magnetic ring, and the saturated magnetic induction intensity is higher and the adjustment range is wider. The axis of the magnetic ring 2 is arranged vertically.
The number of the coil windings 1 is three, the three coil windings 1 are uniformly distributed along the circumferential direction of the magnetic ring 2, and each coil winding 1 is formed by winding a flat copper wire in a vertical winding mode.
The insulating partition plate 3 is made of plastic, the insulating partition plate 3 is downwards inserted into the inner side of the magnetic ring 2, the insulating partition plate 3 is used for separating the three coil windings 1, a convex limiting part is arranged at the upper part of the insulating partition plate 3, and the limiting part is in contact with the upper side face of the magnetic ring 2 to prevent the insulating partition plate 3 from further falling.
Insulating bottom plate 4 is the epoxy board, and insulating bottom plate 4 is located the below of magnetic ring 2, is provided with a plurality of square holes on insulating bottom plate 4.
The three coil windings 1 are respectively and uniformly wound on the magnetic ring 2, the coil windings 1 are wound on the magnetic ring 2 in a single layer, and two pins (namely two ends of the flat copper wire) of the coil windings 1 respectively penetrate through the insulating bottom plate 4 through square holes and are bonded with the square holes through glue. In order to prevent the magnetic ring 2 and the coil windings 1 from being broken down when the transient overvoltage occurs, the insulating partition plate 3 is arranged among the three coil windings 1, and the insulating partition plate 3 is clamped on the inner side of the magnetic ring 2 through interference fit, so that the coil windings 1 can be effectively isolated.
The utility model discloses on the inductance basis of current enameled wire scheme, further improved its thermal diffusivity, the filter effect of flat copper line is good simultaneously, simultaneously under with the effect, its number of turns quantity is less than the enameled wire, saves the cost, adopts insulating barrier 3 can be further its filter effect of improvement, simultaneously, flat copper line sectional area is bigger than general enameled wire, under the same circumstances, the enameled wire needs duplex winding more than two circles, does not have flat copper line to wind the convenience immediately in the production preparation.
In summary, with the above technical solution of the present invention, the nanocrystalline magnetic ring is used, so that the technical problems of low saturation induction density, narrow adjustment range, poor temperature stability, limited application range, and the like of the existing common mode inductor can be solved; common mode noise can be well inhibited, EMI harmonic waves are filtered, peaks generated by a switching power supply are absorbed, devices are prevented from being damaged by surge voltage, the size of a circuit is reduced, and the stability and reliability of a system are improved; the flat vertical winding copper wire is used, so that the heat dissipation performance is good, and the filter effect is better than that of the common enameled wire inductance; compared with the common enameled wire inductor, the surface of the enameled wire inductor is attractive.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The common mode inductor comprises a magnetic ring (2), and is characterized in that a plurality of independent coil windings (1) are wound on the magnetic ring (2) along the circumferential direction of the magnetic ring, and an insulating partition plate (3) capable of separating the coil windings (1) from one another is fixedly arranged on the inner side of the magnetic ring (2).
2. A common-mode inductor according to claim 1, characterized in that the magnetic ring (2) is a nanocrystalline magnetic ring.
3. A common-mode inductor according to claim 1, characterized in that the coil winding (1) is wound from flat copper wire.
4. A common-mode inductor according to claim 3, characterized in that the magnetic ring (2) is provided with an insulating bottom plate (4) along one side in its axial direction, both legs of the coil winding (1) passing through the insulating bottom plate (4).
5. A common-mode inductor according to claim 4, characterized in that the insulating bottom plate (4) is an epoxy plate.
6. The common mode inductor according to claim 4, wherein the insulating base plate (4) is provided with a plurality of square holes for the pins of the coil winding (1) to pass through, and a glue is filled between the square holes and the corresponding ends of the flat copper wires.
7. A common-mode inductor according to claim 1, characterized in that the inside of the magnetic ring (2) is interference fitted with the insulating spacer (3).
8. A common-mode inductor according to claim 7, characterized in that one side of the insulating partition (3) is provided with a protruding limit portion, and the side of the magnetic ring (2) in the axial direction thereof is in contact with the limit portion.
9. A common-mode inductor according to claim 1, characterized in that the insulating spacer (3) is made of plastic.
10. A common-mode inductor according to claim 1, characterized in that the number of coil windings (1) is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120013695.2U CN215069494U (en) | 2021-01-05 | 2021-01-05 | Common mode inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120013695.2U CN215069494U (en) | 2021-01-05 | 2021-01-05 | Common mode inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215069494U true CN215069494U (en) | 2021-12-07 |
Family
ID=79249549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120013695.2U Active CN215069494U (en) | 2021-01-05 | 2021-01-05 | Common mode inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215069494U (en) |
-
2021
- 2021-01-05 CN CN202120013695.2U patent/CN215069494U/en active Active
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