CN221746985U - A nanocrystalline racetrack core common mode inductor - Google Patents

Abstract

The utility model belongs to the technical field of electronic components, and particularly relates to a nanocrystalline runway magnetic core common mode inductor which comprises a magnetic core, two sections of flat copper wires and a base, wherein the magnetic core is U-shaped in appearance, the two sections of flat copper wires are respectively wound on two sides of the magnetic core and symmetrically placed, and two ends of the magnetic core are connected to the base.

Description

A nanocrystalline racetrack core common mode inductor

Technical Field

The utility model belongs to the technical field of electronic components, and in particular relates to a nanocrystalline racetrack magnetic core common mode inductor.

Background Art

Common-mode inductor: A common-mode interference suppression device with ferrite as the core. It consists of two coils of the same size and number of turns symmetrically wound on the same ferrite ring core to form a four-terminal device. It has a large inductance to suppress common-mode signals, but has a very small leakage inductance that has almost no effect on differential-mode signals.

A Chinese patent with application number CN202022206051.3 discloses a common-mode inductor, which includes a base, a magnetic core structure and a winding structure. The base includes a substrate, a connecting portion and a partition. In a direction perpendicular to the upper surface of the substrate, the partition is spaced a predetermined distance from the substrate, and the partition is connected to the substrate through a connecting portion. The connecting portion is used to support the partition. The substrate, the connecting portion and the partition are integrally formed. The magnetic core structure is sleeved on the partition and supported by the substrate. The winding structure is wound on the magnetic core structure. By integrally forming the substrate, the connecting portion and the partition, the assembly complexity of the common-mode inductor can be reduced.

However, in the common-mode inductor of the above prior art, the magnetic core is in a ring shape, and the winding is a coil wound on the magnetic core, so that the windings located at the inner circle of the magnetic core are closely arranged, and the gaps between the windings located at the outer circle of the magnetic core are large, and the space utilization rate is low, so that the volume of the common-mode inductor is large.

Utility Model Content

In view of the above-mentioned deficiencies existing in the prior art, the utility model provides a nanocrystalline racetrack core common-mode inductor to solve the problem that the existing common-mode inductors have low space utilization and result in large volume.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A nanocrystalline racetrack magnetic core common mode inductor comprises a magnetic core, two sections of flat copper wire and a base. The magnetic core is U-shaped. The two sections of flat copper wire are respectively wound on two sides of the magnetic core and symmetrically placed. The two ends of the magnetic core are connected to the base.

Furthermore, a partition is provided between the two ends of the flat copper wires, a horizontal plate is provided on the top of the partition, a back plate is provided on the base, the partition is connected to the back plate, and a stopper is provided on the base below the flat copper wires.

Furthermore, a connecting block is provided on the side of the partition, and a connecting hole is provided on the back plate, and the connecting block is plugged into the connecting hole.

Furthermore, the magnetic core is a nanocrystalline racetrack magnetic core.

Compared with the prior art, the utility model has the following beneficial effects:

1. The U-shaped magnetic core makes the winding of the flat copper wire more convenient and tight, saving manufacturing costs. Compared with the circular magnetic core, its space utilization rate is higher, resulting in a smaller volume;

2. The magnetic core is a nanocrystalline racetrack magnetic core, so the magnetic permeability of the magnetic core is high and the product has high inductance characteristics.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the planar structure of an embodiment of a nanocrystalline racetrack core common mode inductor of the utility model (viewing angle 1);

FIG2 is a schematic diagram of the planar structure of an embodiment of a nanocrystalline racetrack core common mode inductor of the utility model (viewing angle 2);

The reference numerals in the drawings of the specification include:

Base 1, stopper 11, back plate 12, connection hole 121, partition plate 13, transverse plate 131, connection block 132, fixing pin 133, magnetic core 2, flat copper wire 3.

DETAILED DESCRIPTION

In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

Example:

As shown in Figures 1-2, the utility model. Specifically, a nanocrystalline racetrack magnetic core common mode inductor includes a magnetic core 2, two sections of flat copper wire 3 and a base 1, wherein the magnetic core 2 is U-shaped, the two sections of flat copper wire 3 are respectively wound on both sides of the magnetic core 2 and symmetrically placed, and the two ends of the magnetic core 2 are connected to the base 1.

Furthermore, a partition 13 is provided between the two ends of the flat copper wires 3, a horizontal plate 131 is provided on the top of the partition 13, a back plate 12 is provided on the base 1, the partition 13 is connected to the back plate 12, and a stopper 11 is provided on the base 1 below the flat copper wire 3.

Furthermore, a connecting block 132 is provided on the side of the partition plate 13 , and a connecting hole 121 is provided on the back plate 12 , and the connecting block 132 is plugged into the connecting hole 121 .

Furthermore, the magnetic core 2 is a nanocrystalline racetrack magnetic core.

In this embodiment, the base 1 and the partition 13 are both made of insulating materials, the surface of the flat copper wire 3 is provided with an insulating coating, the surface of the magnetic core 2 is sprayed with epoxy resin for insulation, and the flat copper wire 3 is respectively wound on the left and right magnetic columns of the U-shaped magnetic core 2 to obtain the first winding coil and the second winding coil. A slot is provided on the base 1, and the two magnetic columns of the U-shaped magnetic core 2 are inserted into the slot on the base 1. The first winding and the second winding are separated by a partition 13, and the connecting block 132 of the partition 13 is inserted into the connecting hole 121 on the back plate 12, and a fixing pin 133 is inserted into the connecting block 132 to clamp the partition 13. The pins of the first winding and the second winding are fixed to the base 1 with epoxy glue, and the first winding and the second winding are fixed to the partition 13 with epoxy glue. The partition 13 is a T-shaped structure. The insulating horizontal plate 131 on the top of the partition 13 isolates the first winding and the second winding from the top of the magnetic core 2. The block 11 on the base 1 supports the flat copper wire 3 to limit the movement of the flat copper wire 3 in the magnetic core 2, thereby isolating the magnetic core 2 from the flat copper wire 3.

The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims (4)

1. A nanocrystalline racetrack magnetic core common mode inductor, comprising a magnetic core (2), two sections of flat copper wire (3) and a base (1), characterized in that: the magnetic core (2) has a U-shaped shape, the two sections of flat copper wire (3) are respectively wound on both sides of the magnetic core (2) and symmetrically placed, and the two ends of the magnetic core (2) are connected to the base (1). 2. A nanocrystalline racetrack core common-mode inductor as described in claim 1, characterized in that: a partition (13) is provided between two sections of flat copper wire (3), a cross plate (131) is provided on the top of the partition (13), a back plate (12) is provided on the base (1), the partition (13) is connected to the back plate (12), and a stopper (11) is provided on the base (1) below the flat copper wire (3). 3. A nanocrystalline racetrack core common mode inductor as described in claim 2, characterized in that: a connecting block (132) is provided on the side of the partition (13), and a connecting hole (121) is provided on the back plate (12), and the connecting block (132) is plugged into the connecting hole (121). 4. A nanocrystalline racetrack magnetic core common mode inductor as claimed in claim 3, characterized in that: the magnetic core (2) is a nanocrystalline racetrack magnetic core.