Low-loss miniaturized manganese zinc ferrite magnetic core

Abstract

The utility model relates to the technical field of manganese zinc ferrite magnetic cores, and provides a low-loss miniaturized manganese zinc ferrite magnetic core which comprises an upper magnetic core base, a lower magnetic core base is arranged below the upper magnetic core base, a plurality of first connecting assemblies are arranged at the lower end of the upper magnetic core base, and a plurality of second connecting assemblies are arranged at the lower end of the lower magnetic core base. A plurality of first connecting assemblies are arranged at the bottom end of the upper magnetic core base and used for connecting the upper magnetic core base and the lower magnetic core base, the first connecting assemblies are annularly arrayed at the lower end of the upper magnetic core base, and a second connecting assembly is arranged at the center of the bottom end of the upper magnetic core base and used for connecting the upper magnetic core base and the lower magnetic core base. A plurality of first heat dissipation assemblies are arranged at the top end of the second connecting assembly and used for guiding heat generated by the coil, the first heat dissipation assemblies are annularly arrayed at the top end of the first connecting assembly, and a plurality of second heat dissipation assemblies are arranged at the bottom end of the second connecting assembly and used for guiding heat generated by the coil. The loss of the magnetic core is reduced, and the heat dissipation efficiency of the magnetic core is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manganese-zinc ferrite cores, and in particular to a low-loss miniaturized manganese-zinc ferrite core. Background Art

[0002] Ferrite core is a kind of high-frequency magnetic conductive material, mainly used for high-frequency transformers (such as switching power supplies, line output transformers, etc.), high-frequency magnetic rings (for anti-interference), etc.

[0003] After searching, the existing patent (Announcement No.: CN208298657U) discloses a magnetic core structure that can be used for a small power transformer. The magnetic core and the coil are arranged in the inner cavity of the shell. The magnetic core squeezes the leaf spring so that the magnetic core and the shell are interference-fitted, thereby fixing the magnetic core in the inner cavity; when the magnetic core structure is subjected to external force, the magnetic core further squeezes the leaf springs on both sides, thereby buffering the impact of the external force on the magnetic core. The elastic column squeezes the magnetic core through the pre-tightening force formed by the recovery elastic deformation, so that the magnetic core and the elastic column conflict with each other and fix the magnetic core in the inner cavity; at the same time, when the magnetic core structure is subjected to the force in the up and down directions, the elastic column further undergoes elastic deformation to buffer the effect of external force and reduce the impact on the magnetic core. The shell and the ribs are standard components, and the manufacturing process is simple and convenient for mass production. The shell and the ribs are used in combination to avoid the phenomenon that the magnetic core structure in the transformer reduces the transformer effect due to loose installation. During use, the above utility model uses the shell and the ribs in combination to avoid damage to the magnetic core, thereby improving the use effect of the magnetic core. However, the shell is provided on the outside of the magnetic core, which may cause excess heat generated during the use of the magnetic core to be unable to dissipate, resulting in a large magnetic flux loss of the magnetic core, thereby reducing the service life of the magnetic core. Utility Model Content

[0004] The utility model proposes a low-loss miniaturized manganese-zinc ferrite core, which solves the problem in the related art that a shell is provided on the outside of the core, which may cause excess heat generated during the use of the core to be unable to dissipate, resulting in a large magnetic flux loss of the core, thereby reducing the service life of the core.

[0005] The technical solution of the utility model is as follows: a low-loss miniaturized manganese-zinc ferrite core, comprising: an upper core base, a lower core base is arranged below the upper core base, a plurality of first connecting components are arranged at the lower end of the upper core base for connecting the upper core base with the lower core base, a plurality of the first connecting components are arranged in a circular array at the lower end of the upper core base, a second connecting component is arranged at the center of the bottom end of the upper core base for connecting the upper core base with the lower core base, a plurality of first heat dissipation components are arranged at the top end of the second connecting component for guiding the heat generated by the coil, a plurality of the first heat dissipation components are arranged in a circular array at the top end of the first connecting component, a plurality of second heat dissipation components are arranged at the bottom end of the second connecting component for guiding the heat generated by the coil, and a plurality of the second heat dissipation components are arranged in a circular array at the bottom end of the second connecting component.

[0006] Preferably, the first connecting assembly comprises an upper guard column fixedly connected to the outer wall of the bottom end of the upper magnetic core base, and a first engaging groove is formed at the bottom end of the upper guard column.

[0007] Preferably, the first connecting assembly also includes a first cross-engaging block snap-fitted to the inner wall of the first engaging groove, the lower end of the first cross-engaging block is fixedly connected to a lower guard column, and the bottom end of the lower guard column is fixedly connected to the top outer wall of the lower magnetic core base.

[0008] Preferably, the second connecting component further comprises an upper connecting column fixedly connected to the outer wall of the bottom end of the upper magnetic core base, and a second engaging groove is formed at the bottom end of the upper connecting column.

[0009] Preferably, the second connecting assembly also includes a second cross-engaging block snap-fitted to the inner wall of the bottom end of the second engaging groove, the bottom end of the second cross-engaging block is fixedly connected to a lower connecting column, and the bottom end of the lower connecting column is fixedly connected to the top outer wall of the lower magnetic core base.

[0010] Preferably, the second connecting component also includes an arc-shaped snap-fitting groove opened on the outer wall of the top end of the second cross snap-fitting block, the inner wall of the arc-shaped snap-fitting groove is snap-fitted with the arc-shaped snap-fitting block, and the top end of the arc-shaped snap-fitting block is fixedly connected to the outer wall of the top end of the second snap-fitting groove.

[0011] Preferably, the first heat dissipation component further comprises an upper heat dissipation groove formed on the outer wall at the top end of the upper magnetic core base, and an upper heat dissipation arc is arranged at the other end of the upper heat dissipation groove.

[0012] Preferably, the second heat dissipation component further comprises a lower heat dissipation groove formed on the outer wall at the top end of the lower magnetic core base, and a lower heat dissipation arc is arranged at the other end of the lower heat dissipation groove.

[0013] The working principle and beneficial effects of the utility model are:

[0014] In the utility model, the upper guard post and the lower guard post between the upper magnetic core base and the lower magnetic core base are distributed at a far distance, thereby increasing more space for heat dissipation, while avoiding the small space at the protective magnetic core that causes the heat to be unable to dissipate, thereby improving the heat dissipation efficiency of the magnetic core, and at the same time, the upper heat dissipation groove and the lower heat dissipation groove guide the heat generated by the upper and lower parts of the coil, thereby facilitating the guidance of the heat of the coil, and then the heat is exported through the upper heat dissipation arc and the lower heat dissipation arc, thereby facilitating the export of heat to the outside, and at the same time, through the engagement of the first clamping groove and the first cross clamping block and the engagement of the second clamping groove and the second cross clamping block, the combination accuracy of the magnetic core is increased, and the wear caused by the combination displacement is avoided, thereby reducing the excess heat generated by the coil, thereby reducing the loss of the magnetic core, and improving the heat dissipation efficiency of the magnetic core; BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a front view structural schematic diagram of the utility model;

[0017] Figure 2 This is a front view of the expanded structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the upper magnetic core base proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the lower magnetic core base proposed by the utility model;

[0020] In the figure: 1, upper magnetic core base; 2, lower magnetic core base; 3, first connecting component; 301, upper guard column; 302, first snap-fitting groove; 303, first cross snap-fitting block; 304, lower guard column; 4, second connecting component; 401, upper connecting column; 402, second snap-fitting groove; 403, second cross snap-fitting block; 404, arc snap-fitting block; 405, arc snap-fitting groove; 406, lower connecting column; 5, first heat dissipation component; 501, upper heat dissipation slot; 502, upper heat dissipation arc; 6, second heat dissipation component; 601, lower heat dissipation slot; 602, lower heat dissipation arc. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The present application embodiment discloses a low-loss miniaturized manganese-zinc ferrite core. Figure 1-Figure 3 A low-loss miniaturized manganese-zinc ferrite core comprises: an upper magnetic core base 1, a lower magnetic core base 2 is arranged below the upper magnetic core base 1, a plurality of first connecting components 3 are arranged at the lower end of the upper magnetic core base 1 for connecting the upper magnetic core base 1 with the lower magnetic core base 2, a plurality of the first connecting components 3 are arranged in a circular array at the lower end of the upper magnetic core base 1, a second connecting component 4 is arranged at the center of the bottom end of the upper magnetic core base 1 for connecting the upper magnetic core base 1 with the lower magnetic core base 2, a plurality of first heat dissipation components 5 are arranged at the top end of the second connecting component 4 for guiding the heat generated by the coil, a plurality of the first heat dissipation components 5 are arranged in a circular array at the top end of the first connecting component 3, a plurality of second heat dissipation components 6 are arranged at the bottom end of the second connecting component 4 for guiding the heat generated by the coil The amount of guidance is carried out, and several second heat dissipation components 6 are arranged in a circular array at the bottom end of the second connecting component 4. The first connecting component 3 includes an upper guard column 301 fixedly connected to the outer wall of the bottom end of the upper magnetic core base 1. The bottom end of the upper guard column 301 is provided with a first engaging groove 302. The first connecting component 3 also includes a first cross engaging block 303 engaged with the inner wall of the first engaging groove 302. The lower end of the first cross engaging block 303 is fixedly connected with a lower guard column 304. The bottom end of the lower guard column 304 is fixedly connected to the top outer wall of the lower magnetic core base 2. The first engaging groove 302 is a cross groove and is engaged with the outer wall of the first cross engaging block 303. When the first engaging groove 302 is engaged with the first cross engaging block 303, the misalignment of the upper guard column 301 and the lower guard column 304 during the connection process can be avoided.

[0023] See also Figure 2-Figure 4The second connecting component 4 also includes an upper connecting column 401 fixedly connected to the outer wall of the bottom end of the upper magnetic core base 1, and a second engaging groove 402 is provided at the bottom end of the upper connecting column 401. The second connecting component 4 also includes a second cross engaging block 403 engaged with the inner wall of the bottom end of the second engaging groove 402, and a lower connecting column 406 is fixedly connected to the bottom end of the second cross engaging block 403, and the bottom end of the lower connecting column 406 is fixedly connected to the outer wall of the top end of the lower magnetic core base 2. The second connecting component 4 also includes an arcuate engaging groove 405 provided on the outer wall of the top end of the second cross engaging block 403. The inner wall of the arc-shaped engaging groove 405 is engaged with an arc-shaped engaging block 404, and the top of the arc-shaped engaging block 404 is fixedly connected to the top outer wall of the second engaging groove 402. The second engaging groove 402 is a cross engaging seat. When the second engaging groove 402 is engaged with the second cross engaging block 403, misalignment can be avoided. When the second engaging groove 402 is engaged with the second cross engaging block 403, the arc-shaped engaging block 404 and the arc-shaped engaging groove 405 are just engaged together, which helps to further accurately position and further avoid the possibility of misalignment between the upper connecting column 401 and the lower connecting column 406.

[0024] See also Figure 3 and Figure 4 The first heat dissipation component 5 also includes an upper heat dissipation groove 501 opened on the top outer wall of the upper magnetic core base 1, and an upper heat dissipation arc 502 is arranged at the other end of the upper heat dissipation groove 501. The second heat dissipation component 6 also includes a lower heat dissipation groove 601 opened on the top outer wall of the lower magnetic core base 2, and a lower heat dissipation arc 602 is arranged at the other end of the lower heat dissipation groove 601. The upper and lower connecting surfaces of the upper heat dissipation arc 502 are both provided with curvatures, so as to facilitate the guidance of heat. When the coil generates heat, the heat generated by the upper half of the coil is guided outward through the upper heat dissipation groove 501, and the heat is guided to the outside through the upper heat dissipation arc 502. At the same time, when the lower half of the coil generates heat, the heat is guided to the lower heat dissipation arc 602 through the lower heat dissipation groove 601, and the heat is guided to the outside through the lower heat dissipation arc 602.

[0025] Working principle and usage process: align the mouth of the first engaging groove 302 at the bottom of the upper guard column 301 with the first cross engaging block 303 at the top of the lower guard column 304, and at the same time, align the mouth of the second engaging groove 402 at the bottom of the upper connecting column 401 with the second cross engaging block 403 at the top of the lower connecting column 406, and engage them in sequence, so that the upper guard column 301 and the lower guard column 304 are fixed together, and the upper connecting column 401 and the lower connecting column 406 are fixed together. At this time, the coil is wound on the connecting column body composed of the upper connecting column 401 and the lower connecting column 406, and then further fixed with rubber packaging.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-loss miniaturized manganese-zinc ferrite core, comprising: An upper magnetic core base (1) is characterized in that a lower magnetic core base (2) is arranged below the upper magnetic core base (1), a plurality of first connecting components (3) are arranged at the lower end of the upper magnetic core base (1) for connecting the upper magnetic core base (1) with the lower magnetic core base (2), a plurality of the first connecting components (3) are arranged in a circular array at the lower end of the upper magnetic core base (1), a second connecting component (4) is arranged at the center of the bottom end of the upper magnetic core base (1) for connecting the upper magnetic core base (1) with the lower magnetic core base (2), a plurality of first heat dissipation components (5) are arranged at the top end of the second connecting component (4) for guiding heat generated by the coil, a plurality of the first heat dissipation components (5) are arranged in a circular array at the top end of the first connecting component (3), a plurality of second heat dissipation components (6) are arranged at the bottom end of the second connecting component (4) for guiding heat generated by the coil, a plurality of the second heat dissipation components (6) are arranged in a circular array at the bottom end of the second connecting component (4).

2. A low-loss miniaturized manganese-zinc ferrite core according to claim 1, characterized in that: The first connection assembly (3) comprises an upper guard column (301) fixedly connected to the outer wall of the bottom end of the upper magnetic core base (1), and a first locking groove (302) is provided at the bottom end of the upper guard column (301).

3. A low-loss miniaturized manganese-zinc ferrite core according to claim 2, characterized in that: The first connection assembly (3) further comprises a first cross-engaging block (303) that is engaged with the inner wall of the first engaging groove (302); the lower end of the first cross-engaging block (303) is fixedly connected to a lower guard column (304); the bottom end of the lower guard column (304) is fixedly connected to the top outer wall of the lower magnetic core base (2).

4. A low-loss miniaturized manganese-zinc ferrite core according to claim 1, characterized in that: The second connection component (4) further comprises an upper connection column (401) fixedly connected to the outer wall of the bottom end of the upper magnetic core base (1), and a second locking groove (402) is formed at the bottom end of the upper connection column (401).

5. A low-loss miniaturized manganese-zinc ferrite core according to claim 4, characterized in that: The second connection assembly (4) further comprises a second cross-engaging block (403) which is engaged with the inner wall of the bottom end of the second engaging groove (402); the bottom end of the second cross-engaging block (403) is fixedly connected to a lower connecting column (406); the bottom end of the lower connecting column (406) is fixedly connected to the top outer wall of the lower magnetic core base (2).

6. A low-loss miniaturized manganese-zinc ferrite core according to claim 5, characterized in that: The second connection component (4) further comprises an arc-shaped snap-fitting groove (405) formed on the outer wall at the top end of the second cross snap-fitting block (403); the inner wall of the arc-shaped snap-fitting groove (405) is snap-fitted with the arc-shaped snap-fitting block (404); and the top end of the arc-shaped snap-fitting block (404) is fixedly connected to the outer wall at the top end of the second snap-fitting groove (402).

7. A low-loss miniaturized manganese-zinc ferrite core according to claim 1, characterized in that: The first heat dissipation component (5) further comprises an upper heat dissipation groove (501) formed on the outer wall of the top end of the upper magnetic core base (1), and an upper heat dissipation arc (502) is arranged at the other end of the upper heat dissipation groove (501).

8. A low-loss miniaturized manganese-zinc ferrite core according to claim 1, characterized in that: The second heat dissipation component (6) further comprises a lower heat dissipation groove (601) formed on the outer wall of the top end of the lower magnetic core base (2), and a lower heat dissipation arc (602) is provided at the other end of the lower heat dissipation groove (601).

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