CN215377104U - Magnetic core for circuit board - Google Patents

Abstract

The utility model mainly relates to a magnetic core for a circuit board, which comprises at least two detachably connected magnetic core bodies, wherein each magnetic core body comprises a bottom plate, a side plate and a winding post, each side plate comprises a first side plate and a second side plate, each of the first side plate and the second side plate is provided with four wall surfaces, each side plate comprises a first wall surface close to the winding post, a second wall surface far away from the winding post, and a third wall surface and a fourth wall surface which are arranged between the first wall surface and the second wall surface, a connecting part is arranged on each of the third wall surface and the fourth wall surface, each connecting part comprises a clamping groove on the third wall surface and a clamping block on the fourth wall surface, a limiting groove is further formed in the inner wall of each clamping groove, the bottom end of each limiting groove is provided with a buffer part, each clamping block is further provided with a limiting lug matched with the limiting groove, the two magnetic core bodies are connected through the connecting parts, each winding post is provided with a through groove, a heat dissipation layer is arranged in each through groove, and an annular notch is formed at the position, close to the bottom plate, of each winding post, the bottom plate is also provided with a plurality of heat dissipation grooves, and the heat dissipation plate is novel in structure, convenient to assemble and good in heat dissipation performance.

Description

Magnetic core for circuit board

Technical Field

The utility model relates to the technical field of magnetic cores, in particular to a magnetic core for a circuit board.

Background

The magnetic core is a sintered magnetic metal oxide composed of various iron oxide mixtures, is a common part in various electrical equipment, and is widely applied to various devices such as inductors, transformers, switching power supplies, circuit boards and the like. At present, ferrite cores are mostly adopted, because the soft magnetic ferrite cores can also obtain high magnetic conductivity without using rare materials such as nickel and the like, and the powder metallurgy method is suitable for mass production, so the cost is low, and because sintered materials have high hardness and are insensitive to stress, the application is very convenient.

However, some problems still occur in the using process, for example, the magnetic cores with general structures cannot be used in an overlapping manner, or the heat dissipation capability of the magnetic cores after overlapping is poor in the using process.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the magnetic core for the circuit board, which has a novel structure, is convenient to assemble and has better heat dissipation capability.

In order to achieve the purpose, the utility model provides the following technical scheme:

a magnetic core for a circuit board comprises at least two detachably connected magnetic core bodies, each magnetic core body comprises a bottom plate, side plates and a winding post, each side plate comprises a first side plate and a second side plate, the first side plate and the second side plate are symmetrically arranged around the winding post, the first side plate and the second side plate are respectively provided with four walls, each side plate comprises a first wall close to the winding post, a second wall far away from the winding post and a third wall and a fourth wall which are arranged between the first wall and the second wall, each third wall and the fourth wall are provided with connecting parts, each connecting part comprises a clamping groove in the third wall and a clamping block in the fourth wall, a plurality of limiting grooves are further formed in the inner walls of the clamping grooves, the bottom ends of the limiting grooves are provided with buffering parts, limiting lugs matched with the limiting grooves are further arranged on the clamping blocks, the two magnetic core bodies are detachably connected through the connecting parts, the middle parts of the winding posts are provided with through grooves, the radiating layer is arranged on the inner wall of the through groove, the positions, close to the bottom plate, of the winding posts are provided with annular notches, and the bottom plate is further provided with a plurality of radiating grooves.

Further, buffer portion includes buffer block and spring, and the buffer block includes first buffer block and second buffer block, the spring is arranged in between first buffer block and the second buffer block.

Still further, the heat dissipation layer is composed of a copper heat dissipation thin layer.

And furthermore, the radiating groove is arranged at the joint of the winding post and the bottom plate, one end of the radiating groove is connected with the winding post, and the other end of the radiating groove is connected with the side plate.

Preferably, the first wall surface is in the shape of an inwardly concave arc.

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

the magnetic core is provided with the connecting parts, namely the clamping grooves and the clamping blocks which are matched, when two magnetic core bodies need to be assembled, the two magnetic core bodies are placed side by side, then the clamping block of one magnetic core body is inserted into the clamping groove of the other magnetic core body, in order to further improve the connection stability, a plurality of limiting grooves are further arranged in the clamping groove, the clamping block is provided with limiting lugs matched with the limiting grooves, after the clamping block is inserted into the clamping groove, the limiting lugs are embedded into the limiting grooves for further fixing, and the magnetic core is fragile, so that the limiting grooves are further provided with buffer parts to protect the magnetic core; meanwhile, in order to ensure that the magnetic core can have better heat dissipation performance, the middle part of the winding post is provided with a through groove, the inner wall of the through groove is provided with a copper heat dissipation layer, the joint of the winding post and the bottom plate is provided with an annular notch, and the bottom plate is provided with a heat dissipation groove which is used for preventing the coil from being in too close contact with the bottom plate after being wound to effectively dissipate heat.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic side view of a magnetic core according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of another side view of the magnetic core body according to the embodiment of the utility model;

fig. 4 is a schematic view of an internal structure of a card slot according to an embodiment of the present invention.

In the figure: 1-a magnetic core body; 2-a bottom plate; 3-side plate; 3 a-a first side panel; 3 b-a second side panel; 4-wrapping post; 4 a-through groove; 4 b-an annular notch; 5-a clamping groove; 5 a-a limit groove; 6-clamping blocks; 6 a-a limiting block; 7-a heat dissipation layer; 8-a heat sink; 9-a buffer; 9 a-a first buffer block; 9 b-a second buffer block; 9 c-spring.

Detailed Description

The following examples and figures 1-4 illustrate further embodiments of the present invention.

The concrete structure of the embodiment is as follows: including at least two magnetic core bodies 1 that can dismantle the connection, two or more magnetic core bodies 1 can be assembled or be dismantled as the circumstances about promptly, magnetic core body 1 body mainly includes bottom plate 2, curb plate 3 and wrapping post 4, curb plate 3 includes first curb plate 3a and second curb plate 3b, first curb plate 3a sets up with second curb plate 3b about wrapping post 4 symmetry, first curb plate 3a and second curb plate 3b all are equipped with four walls, including the first wall that is close to wrapping post 4, keep away from the second wall of wrapping post 4 and place third wall and fourth wall between first wall and the second wall in, in order to increase the usable area of magnetic core, first wall sets up to the convex of inside recess.

Because for can dismantle the connection between the magnetic core body 1, consequently be equipped with connecting portion on third wall and fourth wall, this connecting portion include draw-in groove 5 on the third wall and fixture block 6 on the fourth wall, and after fixture block 6 of a magnetic core body 1 imbeds the draw-in groove 5 of another magnetic core body 1 promptly, two magnetic core bodies 1 have just accomplished the equipment. Simultaneously, in order to further improve the steadiness after the equipment, still seted up a plurality of spacing grooves 5a on draw-in groove 5 inner wall, this spacing groove 5a is equipped with four and the symmetry is arranged, is equipped with the spacing lug with spacing groove 5a looks adaptation on fixture block 6, and fixture block 6 imbeds promptly in draw-in groove 5 after, and in stopper 6a will be embedded into spacing groove 5a correspondingly, further firm the connection. Because the magnetic core is comparatively fragile, the dynamics is too big when two magnetic core body 1 assembled link, in order to protect the magnetic core, is equipped with buffer 9 in spacing groove 5a bottom, and buffer 9 mainly includes buffer block and spring 9c, and the buffer block includes first buffer block 9a and second buffer block 9b, and spring 9c arranges in between first buffer block 9a and second buffer block 9 b. When the limiting block 6a is embedded into the limiting groove 5a, the limiting block will abut against the buffer part 9, and therefore the collision force can be reduced. And a compression function can be realized, so that the magnetic core is protected, the stability of connection can be enhanced, and the practicability is stronger.

Because the magnetic core with a general structure has poor heat dissipation capability, in order to improve the heat dissipation capability, the middle part of the winding post 4 is provided with a through groove 4a, the inner wall of the through groove 4a is provided with a heat dissipation layer 7, the heat dissipation layer 7 is made of a copper heat dissipation thin layer, the heat dissipation layer 7 made of the material has strong heat dissipation capability, the part, close to the bottom plate 2, of the winding post 4 is provided with an annular notch 4b, the arrangement of the annular notch 4b can reduce the contact area of the coil with the bottom plate 2 during winding, increase the contact of the coil and air and enhance the heat dissipation capability, and the bottom plate 2 is further provided with a plurality of heat dissipation grooves 8, the heat dissipation grooves 8 are arranged at the connection part of the winding post 4 and the bottom plate 2, one ends of the heat dissipation grooves 8 are connected with the winding post 4, and the other ends of the heat dissipation grooves are connected with the side plates 3. The arrangement of the heat dissipation grooves 8 can enhance the circulation and enhance the heat dissipation capability.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art should be able to make general changes and substitutions within the technical scope of the present invention.

Claims (5)

1. A magnetic core for a circuit board, comprising: the magnetic core comprises at least two detachably connected magnetic core bodies, each magnetic core body comprises a bottom plate, side plates and a winding post, each side plate comprises a first side plate and a second side plate, the first side plate and the second side plate are symmetrically arranged around the winding post, the first side plate and the second side plate are respectively provided with four walls, each side plate comprises a first wall surface close to the winding post, a second wall surface far away from the winding post and a third wall surface and a fourth wall surface arranged between the first wall surface and the second wall surface, a connecting part is arranged on each of the third wall surface and the fourth wall surface, each connecting part comprises a clamping groove on the third wall surface and a clamping block on the fourth wall surface, a plurality of limiting grooves are further formed in the inner wall of each clamping groove, a buffer part is arranged at the bottom ends of the limiting grooves, limiting convex blocks matched with the limiting grooves are further arranged on the clamping blocks, the two magnetic core bodies are detachably connected through the connecting parts, a through groove is formed in the middle of the winding post, and a heat dissipation layer is arranged on the inner wall of the through groove, the wrapping post is provided with an annular notch close to the bottom plate, and the bottom plate is also provided with a plurality of radiating grooves.

2. A magnetic core for a circuit board according to claim 1, wherein: the buffer part comprises a buffer block and a spring, the buffer block comprises a first buffer block and a second buffer block, and the spring is arranged between the first buffer block and the second buffer block.

3. A magnetic core for a circuit board according to claim 2, wherein:

the heat dissipation layer is composed of a copper heat dissipation thin layer.

4. A magnetic core for a circuit board according to claim 3, wherein:

the radiating groove is arranged at the joint of the wrapping post and the bottom plate, one end of the radiating groove is connected with the wrapping post, and the other end of the radiating groove is connected with the side plate.

5. A magnetic core for a circuit board according to claim 1, wherein: the first wall surface is in the shape of an inwardly recessed arc.

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