CN213988542U

CN213988542U - Magnetoelectric mechanism

Info

Publication number: CN213988542U
Application number: CN202022735295.0U
Authority: CN
Inventors: 陈亦侠
Original assignee: College of Science and Technology of Ningbo University
Current assignee: College of Science and Technology of Ningbo University
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-08-17
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a magnetoelectric mechanism, which comprises a base, a magnetic core arranged on the base and a coil arranged on the magnetic core; the base comprises a base body and a magnetic strip arranged on the base body; a gap is reserved between the magnetic strip and the magnetic core; the utility model discloses a leave the space between magnetic core body and magnetic stripe for the magnetic saturation phenomenon can not appear, then make the magnetic flux of magnetic core bigger, and the production and processing is more convenient, and the winding of coil is also more convenient.

Description

Magnetoelectric mechanism

Technical Field

The utility model belongs to the technical field of the filter inductance, especially, relate to a magnetoelectric mechanism.

Background

At present, EMI noise waves of an electronic complete machine easily enter a power grid to pollute the power grid, and if the EMI noise waves in the power grid enter the electronic complete machine, the electronic complete machine can also be unstable in work. In contrast, countries in the world have developed relevant technical standards to detect whether the electronic complete machine meets relevant EMI limiting specifications, and products that do not meet the standards cannot be sold in the market. Therefore, most electronic products are designed with an EMI filter to pass the related EMI certification, and the EMI filter is generally placed at the input end of the power line or integrated at the input end of the power panel.

In an EMI filter or module, the filter inductance is an important component, and the performance of the filter or module largely determines the performance of the whole EMI filter. The EMI clutter of the electronic complete machine not only contains common mode interference, but also contains differential mode interference, the two kinds of interference are mixed together and are difficult to distinguish, and a high-quality EMI filter or module is required to be capable of filtering the common mode interference and filtering the differential mode interference, so that a common mode inductor and a differential mode inductor form necessary magnetic elements of a high-quality filtering power supply device, however, the filtering power supply device with the common mode inductor and the differential inductor is large in size and high in cost, so that the finding of the common mode and differential mode composite inductor with the common mode and the differential mode becomes necessary, and a magnetic core is the core of the inductor.

The existing magnetic core for the common-mode and differential-mode composite inductors is generally an EE-type combination of two E-shaped magnetic cores, and because the contact end surfaces of the two magnetic cores have gaps, the magnetic conductivity is relatively low, and the two magnetic cores are split, the two magnetic cores are very inconvenient to wind coils, so that the processing and production efficiency is low.

Disclosure of Invention

The utility model discloses an overcome prior art not enough, provide a magnetoelectric mechanism that magnetic flux is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a magnetoelectric mechanism comprises a base, a magnetic core arranged on the base and a coil arranged on the magnetic core; the base comprises a base body and a magnetic strip arranged on the base body; a gap is reserved between the magnetic strip and the magnetic core; this application is through leaving the space between magnetic core body and magnetic stripe for the magnetic saturation phenomenon can not appear, then makes the magnetic flux of magnetic core bigger, makes the magnetic core body structure as an organic whole simultaneously, then makes the production and processing more convenient, and the winding of coil is also more convenient.

Furthermore, the base also comprises a second limiting part for fixing the magnetic strip; when realizing the installation of magnetic stripe, guarantee to leave the clearance all the time between magnetic stripe and the magnetic core, then make the phenomenon that magnetic saturation can not appear.

Furthermore, the magnetic strip and the second limiting part are arranged in an integrated structure.

Furthermore, the magnetic stripe and the second limiting part are arranged in a split structure.

Further, the base further comprises a supporting part for supporting the magnetic core; make the magnetic core can be by too high, then make the coil can not direct and base body contact, leave the space, make things convenient for the installation between base and the magnetic core fixed, also make the heat that produces on the coil can distribute away simultaneously.

Further, the base further comprises a connecting rod connected with the coil.

Further, the base also comprises a limiting structure for fixing the magnetic core.

Furthermore, limit structure is including locating first spacing portion on the base body.

Further, the magnetic core is arranged in a square annular structure.

Further, the magnetic core comprises a magnetic core body and a winding portion arranged on the magnetic core body.

To sum up, the utility model discloses a leave the space between magnetic core body and magnetic stripe for the magnetic saturation phenomenon can not appear, make the magnetic flux of magnetic core bigger then, and production and processing is more convenient, and the winding of coil is also more convenient.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of the three-dimensional structure of the middle base of the present invention.

Detailed Description

As shown in fig. 1-2, a magnetoelectric mechanism includes a magnetic core 1, a base 2, and a coil 3; the magnetic core 1 is fixed on the base 2, and the coil 3 is wound on the magnetic core body 10, corresponding to the arc-shaped surface 101 and the plane 102 on the magnetic core.

Specifically, the magnetic core 1 includes a magnetic core body 10 and a winding portion 15; magnetic core body 10 is the setting of square ring structure, and magnetic core body 10 structure as an organic whole sets up to make the drawing of patterns more convenient, when improving production efficiency, it is also more convenient to twine the coil.

Preferably, the upper surface and the lower surface of two side edges of the magnetic core body 10 are both provided with arc-shaped surfaces 101, while the inner surface and the outer surface are both provided with planes 102, so that the coil can be better wound on the magnetic core body; the winding part 15 is formed by an arc-shaped surface and a plane.

In other embodiments, the magnetic core body 10 may be disposed in a circular ring shape, or in other shapes.

Specifically, the base 2 comprises a base body 20, a magnetic strip 11, a limiting structure, a supporting part 23, a groove 24 and a connecting rod 25; the limiting structure comprises a first limiting part 21 and a second limiting part 22, the first limiting part 21 and the second limiting part 22 are formed by upwards extending at least part of the upper surface of the base body 20, the first limiting part 21 is positioned on the outer side of the magnetic core 1 and corresponds to the side, which is not wound with the coil 3, of the magnetic core body 10, so that the transverse limiting effect on the magnetic core is achieved, the magnetic core is prevented from sliding left and right, and the magnetic core and the base are conveniently connected and fixed; the spacing portion 22 of second is located base body 20 middle part, and is corresponding with the middle part of magnetic core body 10, can enough play the horizontal limiting displacement to the magnetic core, can play the vertical limiting displacement to the magnetic core again, and can also play the support fixed action to magnetic stripe 11, fixes magnetic stripe 11 in magnetic core body 10 middle part, and makes and leave space 13 between magnetic stripe 11 and the magnetic core body 10, then makes the magnetic saturation phenomenon can not appear.

In this embodiment, the magnetic stripe 11 and the second position-limiting portion 22 are integrally formed.

In other embodiments, the magnetic stripe 11 and the second position-limiting portion 22 can also be disposed in a split structure.

Further, the supporting part 23 is also formed by the outward extension of at least part of the surface of the base body 20, is "L" shape structure and sets up, and is corresponding with four angles of the magnetic core body 10, plays the supporting role to the magnetic core body, lifts the magnetic core body, makes to leave the interval between the magnetic core body and the base body, then makes the coil 3 can not directly contact with the base body, fixed magnetic core and coil easy to assemble, also makes the radiating effect better simultaneously.

In this embodiment, four first limiting portions 21 are formed, and a groove 24 is formed between the two first limiting portions on the same side, so as to further improve the heat dissipation effect and avoid the internal temperature from being too high.

Specifically, at least part of the lower surface of the base body 20 extends downward to form a supporting leg 26, and the base body 20 is further provided with a through hole which penetrates through the supporting leg 26 and the base body 20; the connecting rod 25 is formed in an "L" shape and made of a metal material, one end of which passes through the through hole and is exposed from the lower end of the supporting leg 26, and the other end of which is located on the upper surface of the base body 20 and extends out from the upper surface of the base body.

In the present embodiment, 2 coils 3 are installed, and both ends of each coil are respectively connected and fixed with a connecting rod 25.

Preferably, the side surface of the base body 20 is provided with four side grooves 27, one on each side surface, and the side grooves on the opposite surfaces have the same structure.

Further, the upper surface and the lower surface of the base body 20 are both provided with convex edges, in this embodiment, the convex edges of the upper surface form a shape like a Chinese character 'tian', and the convex edges of the lower surface form a shape like a Chinese character 'mi'; in other embodiments, the protruding edge may be formed in other shapes.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Claims

1. A magnetoelectric mechanism comprises a base (2), a magnetic core (1) arranged on the base (2) and a coil (3) arranged on the magnetic core (1); the method is characterized in that: the base (2) comprises a base body (20) and a magnetic strip (11) arranged on the base body (20); a gap (13) is reserved between the magnetic strip (11) and the magnetic core (1).

2. The magnetoelectric mechanism according to claim 1, characterized in that: the base (2) further comprises a second limiting part (22) used for fixing the magnetic strip (11).

3. The magnetoelectric mechanism according to claim 2, characterized in that: the magnetic strip (11) and the second limiting part (22) are arranged in an integrated structure.

4. The magnetoelectric mechanism according to claim 2, characterized in that: the magnetic strip (11) and the second limiting part (22) are arranged in a split type structure.

5. The magnetoelectric mechanism according to any one of claims 1 to 4, characterized in that: the base (2) further comprises a support portion (23) for supporting the magnetic core (1).

6. The magnetoelectric mechanism according to claim 5, wherein: the base (2) further comprises a connecting rod (25) connected with the coil (3).

7. The magnetoelectric mechanism according to claim 6, wherein: the base (2) further comprises a limiting structure for fixing the magnetic core (1).

8. The magnetoelectric mechanism according to claim 7, wherein: the limiting structure comprises a first limiting part (21) arranged on the base body (20).

9. The magnetoelectric mechanism according to any one of claims 1 to 4, characterized in that: the magnetic core (1) is arranged in a square annular structure.

10. The magnetoelectric mechanism according to claim 9, characterized in that: the magnetic core (1) comprises a magnetic core body (10) and a winding part (15) arranged on the magnetic core body (10).