CN216528344U

CN216528344U - EC type ferrite magnetic core

Info

Publication number: CN216528344U
Application number: CN202123370377.0U
Authority: CN
Inventors: 刘立新
Original assignee: Shenzhen Xinyi Magnetic Material Co ltd
Current assignee: Shenzhen Xinyi Magnetic Material Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-13
Anticipated expiration: 2031-12-30

Abstract

The application discloses an EC-type ferrite core, which belongs to the field of ferrite cores and is used for ferrite, and comprises an upper magnetic core and a lower magnetic core, wherein the upper magnetic core and the lower magnetic core both comprise U-shaped structures formed by a protective plate base body and a side protective plate; the bobbin is located inside the U-shaped structure of the lower magnetic core, the bobbin extends downwards from the top end to form a plugging blind hole, the plugging blind hole is in clearance fit with the plugging column, and magnetic liquid is filled in a clearance between the plugging blind hole and the plugging column. In view of above-mentioned technical scheme, it can be through the promotion that improves ferrite core heat dispersion's ability when realizing the assembly process of being convenient for to ferrite core structure.

Description

EC type ferrite magnetic core

Technical Field

The utility model belongs to the field of ferrite cores, and particularly relates to an EC type ferrite core.

Background

In the circuit element, inductance components and parts are mainly made by winding a conductive material disc around a magnetic core, and certain heat can be generated in the conductive material and the wound magnetic core in the working process, if the heat is not timely led out, the aging of the inductance components can be caused, and the service life of the inductance components and parts can be influenced. Meanwhile, the magnetic core adopts a split structure design, so that the processing of the magnetic core can be facilitated, the processing difficulty is reduced, and the realization of the complex shape of the magnetic core can be realized through combination.

Therefore, in the magnetic core used in the inductance element, how to design the structural form and the heat dissipation form of the magnetic core so that the magnetic core can work better and stably and is convenient to process and assemble becomes one of the technical problems to be solved by the industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an EC type ferrite core which can improve the heat dissipation performance of the ferrite core while realizing convenient assembly and processing through improving the structure of the ferrite core.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the EC-type ferrite magnetic core comprises a magnetic core and a lower magnetic core, wherein the upper magnetic core and the lower magnetic core both comprise a U-shaped structure formed by a protective plate base body and a side protective plate, the upper magnetic core is provided with an inserting column extending in the direction away from the protective plate base body on the protective plate base body in the U-shaped structure, the connecting position of the inserting column and the protective plate base body is provided with a column limit integrated with the inserting column, and the column limit and the inserting column form a step structure for limiting the end part of a bobbin; the bobbin is located inside the U-shaped structure of the lower magnetic core, the bobbin extends downwards from the top end to form a plugging blind hole, the plugging blind hole is in clearance fit with the plugging column, and magnetic liquid is filled in a clearance between the plugging blind hole and the plugging column.

Furthermore, gasket clamping grooves which are coaxial with the protection plate base bodies in the upper magnetic core and the lower magnetic core are arranged at the positions where the protection plate base bodies are respectively connected with the corresponding column limiting and inserting columns, and heat dissipation gaskets are arranged in the gasket clamping grooves.

Furthermore, the side guard plate is provided with a guard plate inner arc surface at the side surface facing the corresponding insertion column and the winding drum, and the guard plate inner arc surface is bent towards the direction far away from the insertion column and the winding drum.

Further, the side guard plate is provided with an outer side arc notch penetrating through the side guard plate on the side surface far away from the corresponding insertion column and the winding drum, and the outer side arc notch is provided with a side clamping step on the end surface of the side guard plate.

Furthermore, the two sides of the end surface of the guard plate base body far away from the insertion column are symmetrically provided with end part clamping steps.

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

according to the utility model, the upper magnetic core and the lower magnetic core which are used in a combined manner are arranged, the heat dissipation areas of the upper magnetic core and the lower magnetic core are increased, and the function of convenient assembly is added, so that the heat dissipation is facilitated, and the convenience degree in the assembly and processing process can be improved.

Drawings

Fig. 1 is a state diagram of the use of the present invention.

Fig. 2 is a schematic view of the structure of the upper core in the present invention.

Fig. 3 is a schematic view of the structure of the lower core in the present invention.

In the figure: 1. an upper magnetic core; 2. a lower magnetic core; 3. a winding coil; 4. a heat-dissipating washer; 5. an outer arc-shaped notch; 6. the side is clamped with the step; 7. the end part is clamped with the step; 8. a side guard plate; 9. inserting the column; 10. limiting the column body; 11. a gasket clamp groove; 12. an inner arc surface of the guard plate; 13. a bobbin; 14. inserting blind holes; 15. a guard plate base body.

Detailed Description

The technical solution of the present invention will be further described and illustrated with reference to the following examples. It should be noted that the following paragraphs may refer to terms of orientation, including but not limited to "upper, lower, left, right, front, rear" and the like, which are all based on the visual orientation shown in the drawings corresponding to the specification, and should not be construed as limiting the scope or technical aspects of the present invention, but merely as facilitating better understanding of the technical aspects of the present invention by those skilled in the art.

As shown in fig. 1 to 3, an EC-type ferrite core includes a U-shaped structure formed by a protection plate base 15 and side protection plates 8 integrally formed with the protection plate base 15 at two sides thereof, wherein a plug-in post 9 and a bobbin 13 that realizes a plug-in function with the plug-in post 9 are respectively fixedly disposed at a middle position of the protection plate base 15 inside the U-shaped structure, and a blind plug-in hole 14 having a length equal to that of the plug-in post 9 is disposed in the bobbin 13. The end face of the end portion of the winding drum 13 is attached to the end face of the cylinder limiting portion 10 at the tail end of the inserting column 9, the cylinder limiting portion 10 is of a cylinder structure integrally formed with the inserting column 9, the outer diameter of the cylinder limiting portion 10 is larger than the outer diameter of the inserting column 9, a step structure for limiting the end portion of the winding drum 13 is formed by the cylinder limiting portion 10 and the inserting column 9, a gap-fit connection mode is adopted between the inserting column 9 and the winding drum 13, and magnetic liquid is filled in a connection gap.

The side clamping steps 6 are symmetrically processed on two sides of the protective plate base body 15, and the side clamping steps 6 are also located on two sides of the bobbin 13 and the inserting column 9. The inner side surfaces of the side guard plates 8 on the two sides of the guard plate base body 15 are provided with guard plate inner arc surfaces 12 which are bent towards directions far away from the bobbin 13 and the inserting column 9, the end surfaces of the side guard plates 8 far away from the bobbin 13 and the inserting column 9 are provided with outer side arc-shaped notches 5 penetrating through the side guard plates 8, and the outer side arc-shaped notches 5 are provided with semicircular cross sections.

The end face of the protection plate base body 15 in the U-shaped structure is provided with a gasket clamping groove 11 for embedding the heat dissipation gasket 4, and the gasket clamping groove 11 is respectively located at the connecting positions of the protection plate base body 15 and the main body limiting 10 and the connecting positions of the protection plate base body 15 and the winding reel 13. The heat dissipation gasket 4 is formed by compounding an acrylic polymer and an organic silicon adhesive, and can guide heat generated by a conductive material into the position of the guard plate base body 15 with a large heat dissipation area.

And epoxy resin is respectively coated at the contact position of the heat dissipation rubber ring 4 and the coil and gasket clamping groove 11 and the connection end surface of the side protection plate 8 of the upper magnetic core 1 and the lower magnetic core 2.

On the basis of the above embodiments, the present invention continues to describe the technical features and functions of the technical features in the present invention in detail to help those skilled in the art fully understand the technical solutions of the present invention and reproduce them.

In the utility model, the plug-in column 9 is connected with the winding drum 13 through the plug-in blind hole 14, the connection mode is clearance fit, a small clearance between the plug-in column and the winding drum can meet the assembly requirement, and the assembly clearance is filled with magnetic liquid, so that the elimination of air gaps is realized through the magnetic liquid.

In the utility model, the inner side surface of the side guard plate 8 is provided with a guard plate inner arc surface 12 for increasing the surface area, and meanwhile, the guard plate inner arc surface 12 can form a circular winding area of the winding coil 3 at the periphery of the insertion column 9 and the winding reel 13 so as to protect the winding coil 3.

Simultaneously, in order to improve

backplate pedestal

15, 8 side guard plate's heat radiating area to and the connection performance with the joint pedestal, can have the outside arc breach 5 that runs through 8 side guard plate in the processing of 8 lateral surfaces of side guard plate, the processing has side joint step 6 in the terminal surface department of outside arc breach 5, side joint step 6 can realize with the joint of above-mentioned joint pedestal, and then realize going up magnetic core 1, lower magnetic core 2's connection through the joint pedestal. Meanwhile, the two sides of the guard plate base body 15 are symmetrically provided with side clamping steps 6 used for being connected with the clamping base body. For example, in fig. 1, a clamping seat body is shown by a dotted line at an outer arc notch 5, and the clamping seat body at least comprises a jaw plate body with two ends embedded with a side clamping step 6 and a fixing plate for connecting the two jaw plate bodies.

Finally, although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description of the present description is for clarity reasons only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The utility model provides an EC type ferrite magnetic core, includes magnetic core (1) and lower magnetic core (2), go up magnetic core (1) and lower magnetic core (2) and all include the U type structure that backplate pedestal (15) and side guard plate (8) constitute, its characterized in that: the upper magnetic core (1) is provided with an inserting column (9) extending in the direction far away from the protective plate base body (15) on the protective plate base body (15) in the U-shaped structure, a column limiting block (10) integrated with the inserting column (9) is arranged at the connecting position of the inserting column (9) and the protective plate base body (15), and the column limiting block (10) and the inserting column (9) form a step structure for limiting the end part of the bobbin (13); the bobbin (13) is located inside the U-shaped structure of the lower magnetic core (2), the bobbin extends downwards from the top end to form a plugging blind hole (14), the plugging blind hole (14) is in clearance fit with the plugging column (9), and magnetic liquid is filled in a clearance between the plugging blind hole (14) and the plugging column (9).

2. An EC-type ferrite core according to claim 1, characterized in that: and gasket clamping grooves (11) which are coaxially arranged with the upper magnetic core (1) and the lower magnetic core (2) are respectively arranged at the connecting positions of the upper magnetic core and the lower magnetic core with the corresponding column limiting part (10) and the corresponding inserting column (9), and heat dissipation gaskets (4) are arranged in the gasket clamping grooves (11).

3. An EC-type ferrite core according to claim 2, characterized in that: the side guard plate (8) is provided with a guard plate inner arc surface (12) at the side face of the side guard plate facing the corresponding insertion column (9) and the corresponding winding reel (13), and the guard plate inner arc surface (12) is bent towards the direction far away from the insertion column (9) and the winding reel (13).

4. An EC-type ferrite core according to claim 3, characterized in that: the side guard plate (8) is processed on the side of keeping away from corresponding grafting post (9), bobbin (13) and has an outside arc breach (5) that runs through side guard plate (8), side joint step (6) have been processed in outside arc breach (5) in the terminal surface department of side guard plate (8).

5. An EC-type ferrite core according to claim 1, characterized in that: the two sides of the end surface of the guard plate base body (15) far away from the insertion column (9) are symmetrically processed with end clamping steps (7).