CN215643944U

CN215643944U - Switching power supply planar transformer with good heat dissipation effect

Info

Publication number: CN215643944U
Application number: CN202121819002.5U
Authority: CN
Inventors: 高明; 邹志军; 汪晓春
Original assignee: Shenzhen Pinlvbai Technology Co ltd
Current assignee: Shenzhen Jiachong Technology Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-01-25
Anticipated expiration: 2031-08-05

Abstract

The utility model discloses a switching power supply planar transformer with a good heat dissipation effect, and particularly relates to the field of machinery. The first isolation groove, the empty groove and the second isolation groove are specially arranged for improving the airflow interaction effect by arranging the interpenetration fixing columns, and the first isolation groove, the empty groove and the second isolation groove are closely attached to each other to form a gap which is more beneficial to the filling and circulation of airflow.

Description

Switching power supply planar transformer with good heat dissipation effect

Technical Field

The utility model relates to the technical field of machinery, in particular to a switching power supply planar transformer with a good heat dissipation effect.

Background

The planar transformer is characterized by high frequency, low modeling, small height, high working frequency and the like, compared with the traditional transformer, the planar transformer is the biggest difference between an iron core and a coil winding, adopts a small-sized E-shaped, RM-shaped or annular ferrite core, is usually made of high-frequency power ferrite materials, and has lower core loss under high frequency; the winding is formed by winding a plurality of layers of printed circuit boards, and the winding or copper sheets are overlapped on the planar high-frequency iron core to form a magnetic loop of the transformer. The design has low direct current copper resistance, low leakage inductance and distributed capacitance, and can meet the design requirements of the resonant circuit. And because of the good magnetic shielding of the magnetic core, the radio frequency interference can be inhibited.

However, in practical use, most of planar transformers are prone to heating up due to long-time operation or high-temperature weather, so that burning-out is prone to occurring, some planar transformers have heat dissipation designs but have shortcomings in dust prevention, and the planar transformers are small in size and not prone to complex heat dissipation structures.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defects in the prior art, embodiments of the present invention provide a planar transformer for a switching power supply with a good heat dissipation effect, so as to solve the problems mentioned in the above background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a switching power supply planar transformer that radiating effect is good, includes planar transformer main part, the lower extreme surface difference joint has last protecting crust and lower protecting crust in the planar transformer main part, the fixed surface is connected with the interlude fixed column down, bottom fixedly connected with connecting screw in the interlude fixed column, connecting screw passes through the installation screw and is connected with the laminating of last protecting crust lower surface, fixed surface is connected with the fin down on the protecting crust, No. two heat dissipation through-holes and No. three heat dissipation through-holes have been seted up respectively to interlude fixed column and lower protecting crust bottom, a heat dissipation through-hole has all been seted up to interlude fixed column front and back end surface.

Preferably, the outer surfaces of the front end and the rear end of the alternating and fixing column are respectively provided with a first isolation groove, the bottom of the lower protective shell is provided with a rising groove, and the bottom of the alternating and fixing column is provided with a second isolation groove.

Preferably, the outer surfaces of two sides of the bottom of the inserting and fixing column are provided with connecting and attaching grooves, and the upper surfaces of two sides of the lower protective shell are clamped in the connecting and attaching grooves.

Preferably, a slot of the transformer body is formed by a gap between the upper protective shell and the lower protective shell.

Preferably, the planar transformer body is mainly formed by combining a PCB board, an insulation sheet and a magnetic core block.

Preferably, the lower surface of the planar transformer body is attached to the upper surface of the heat sink.

Preferably, the outer ring of the inserting fixing column is sleeved with the planar transformer main body.

The utility model has the technical effects and advantages that:

1. compared with the prior art, through setting up the interlude fixed column, for improving the air current interactive effect, specially set up an isolation groove, empty groove and No. two isolation grooves, these have played and have kept apart closely laminating between the entity, the crack that forms like this more does benefit to the circulation of pouring into of air current, because a heat dissipation through-hole is seted up in the side, and be inside so be difficult for leading to inside intaking to cross into the dust in protecting crust below, and No. two heat dissipation through-holes and No. three heat dissipation through-holes are all seted up in the bottom and are made whole device difficult empty groove and intake and cross into the dust more, combine realize good circulation heat dissipation and have certain guard's effect, simple structure, better protection design is realized simultaneously in the heat dissipation.

2. Compared with the prior art, the upper protective shell and the lower protective shell are respectively clamped on the outer surfaces of the upper end and the lower end of the planar transformer main body through the arrangement of the mounting screws, the upper surface of the lower protective shell is fixedly connected with the inserting and fixing column which is hollow, and the inner part of the inserting and fixing column is hollow so as to facilitate the interaction of air flow of inside and outside air; the bottom fixedly connected with connecting stud in the interlude fixed column, connecting stud pass through the mounting screw and are connected with the laminating of last protecting crust lower surface to realize simple and convenient connection fixed action.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic structural diagram of an upper protective shell and a lower protective shell according to the present invention.

Fig. 3 is a schematic view of the structure of the inserting and fixing column of the present invention.

Fig. 4 is a schematic view of the bottom structure of the penetrating fixing column of the present invention.

FIG. 5 is a schematic view of the bottom structure of the lower protective shell according to the present invention.

The reference signs are: 1. a planar transformer body; 2. an upper protective shell; 3. a lower protective shell; 4. mounting screws; 5. fixing columns are inserted and inserted; 6. a vacation groove; 7. a transformer body card slot; 8. connecting a stud; 9. connecting the fitting grooves; 10. an isolation trench; 11. a first heat dissipation through hole; 12. a second isolation groove; 13. a second heat dissipation through hole; 14. a third heat dissipation through hole; 15. a PCB board; 16. an insulating sheet; 17. and a heat sink.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1-5, the planar transformer for the switching power supply with good heat dissipation effect comprises a planar transformer main body 1, wherein an upper protective shell 2 and a lower protective shell 3 are respectively clamped on the outer surfaces of the upper end and the lower end of the planar transformer main body 1, an inserting and fixing column 5 is fixedly connected to the upper surface of the lower protective shell 3, the inserting and fixing column 5 is hollow, and the inner part of the inserting and fixing column 5 is hollow so as to facilitate the interaction of inner air flow and outer air flow; the bottom in the penetrating and fixing column 5 is fixedly connected with a connecting stud 8, the connecting stud 8 is jointed and connected with the lower surface of the upper protective shell 2 through a mounting screw 4, the upper surface of the lower protective shell 3 is fixedly connected with a radiating fin 17, the bottoms of the penetrating and fixing column 5 and the lower protective shell 3 are respectively provided with a second radiating through hole 13 and a third radiating through hole 14, the outer surfaces of the front end and the rear end of the penetrating and fixing column 5 are respectively provided with a first radiating through hole 11, and in order to improve the air flow interaction effect, a first isolation groove 10, an emptying groove 6 and a second isolation groove 12 are specially arranged and are closely jointed with each other to achieve the effect of isolating entities, so that the formed crack is more beneficial to the air flow filling and circulating, because the first radiating through hole 11 is arranged on the side surface and the inner part below the upper protective shell 2, the inner part is not easy to cause dust to flow through, and because the second radiating through hole 13 and the third radiating through hole 14 are arranged on the bottom, the whole device is not easy to cause the emptying groove 6 and the dust flow through, in conclusion, the heat dissipation device realizes good circulation heat dissipation and has a certain protection effect.

In a preferred embodiment, as shown in fig. 2 and 5, the first isolation groove 10 is formed in the outer surface of the front end and the rear end of the inserting and fixing column 5, the emptying groove 6 is formed in the bottom of the lower protective shell 3, and the second isolation groove 12 is formed in the bottom of the inserting and fixing column 5, so that the first isolation groove 10, the emptying groove 6 and the second isolation groove 12 are conveniently formed, and the separation entities are tightly attached to each other, so that the formed crack is more beneficial to the filling and circulation of air flow.

In a preferred embodiment, as shown in fig. 3 and fig. 4, the outer surfaces of two sides of the bottom of the insertion and fixing column 5 are provided with a connecting and attaching groove 9, and the upper surfaces of two sides of the lower protective shell 3 are clamped in the connecting and attaching groove 9, so that the insertion and fixing column 5 and the upper surfaces of two sides of the lower protective shell 3 are closely attached in shape.

In a preferred embodiment, as shown in fig. 2, a transformer body slot 7 is formed in a gap between the upper protective shell 2 and the lower protective shell 3, so as to facilitate installation of the planar transformer body 1, secure fixation of the planar transformer body 1, convenient installation and use, and implement a certain external protection function.

In a preferred embodiment, as shown in fig. 1, the planar transformer body 1 is mainly formed by combining a PCB board 15, an insulation sheet 16 and a magnetic core block, so as to ensure that the planar transformer body 1 realizes a basic working principle.

In a preferred embodiment, as shown in fig. 2, the lower surface of the planar transformer body 1 is attached to the upper surface of the heat sink 17, so as to contact the heat sink 17 with the planar transformer body 1, and then conduct heat and dissipate heat.

In a preferred embodiment, as shown in fig. 1, the planar transformer body 1 is sleeved on the outer ring of the insertion and fixing column 5, so that the insertion and fixing column 5 is especially hollow due to the close contact between the insertion and fixing column 5 and the planar transformer body 1, and the inside of the insertion and fixing column 5 is hollow so as to facilitate the interaction between the inside air and the outside air.

The working principle of the utility model is as follows: aiming at the problem of heat dissipation effect, a heat dissipation effect is improved by improving air circulation which is regular, the inserting and fixing column 5 is closely contacted with the planar transformer main body 1, so the inserting and fixing column 5 is specially arranged to be hollow, the inner part of the inserting and fixing column 5 is hollow so as to facilitate the interaction of inner air flow and outer air flow, firstly, the outer surfaces of the front end and the rear end of the inserting and fixing column are respectively provided with a heat dissipation through hole 11, the high temperature of the planar transformer main body 1 can enter the inserting and fixing column 5 through the heat dissipation through hole 11 to be arranged to be hollow, then, the second heat dissipation through hole 13 and the third heat dissipation through hole 14 flow to the outside, and the fresh air outside can also enter the inserting and fixing column 5 through the second heat dissipation through hole 13 and the third heat dissipation through hole 14 to be arranged to be hollow, and then, the first heat dissipation through hole 11 is contacted with the outer surface of the planar transformer main body 1, realizes the interaction process of air flow, and in order to improve the interaction effect of air flow, the outer surfaces of the front end and the rear end of the inserting and fixing column 5 are respectively provided with a first isolation groove 10, the bottom of the lower protective shell 3 is provided with a rising groove 6, the bottom of the inserting and fixing column 5 is provided with a second isolation groove 12, the isolation bodies are tightly attached, so that the formed crack is more beneficial to the filling and circulation of air flow, and because the outer edge of the first isolation groove 10 is convex, therefore, the bulge can still realize the fixing function to the planar transformer main body 1, and because the first heat dissipation through hole 11 is arranged on the side surface and is arranged in the lower part of the upper protective shell 2, the internal water is not easy to enter and the dust is not easy to enter, and No. two heat dissipation through-holes 13 and No. three heat dissipation through-holes 14 all set up in the bottom and make whole device be difficult for the empty groove 6 and the dust of intaking through going into, have overall realized good circulation heat dissipation and have certain guard's effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a switching power supply planar transformer that radiating effect is good, includes planar transformer main part (1), its characterized in that: the planar transformer comprises a planar transformer main body (1), wherein an upper protective shell (2) and a lower protective shell (3) are respectively clamped on the outer surfaces of the upper end and the lower end of the planar transformer main body (1), an upper surface of the lower protective shell (3) is fixedly connected with an inserting fixing column (5), a connecting stud (8) is fixedly connected with the bottom of the inserting fixing column (5), the connecting stud (8) is connected with the lower surface of the upper protective shell (2) in a laminating mode through a mounting screw (4), a radiating fin (17) is fixedly connected on the upper surface of the lower protective shell (3), a second radiating through hole (13) and a third radiating through hole (14) are respectively formed in the bottoms of the inserting fixing column (5) and the lower protective shell (3), and a first radiating through hole (11) is formed in the outer surfaces of the front end and the rear end of the inserting fixing column (5).

2. The planar transformer for the switching power supply with the good heat dissipation effect as recited in claim 1, wherein: the outer surfaces of the front end and the rear end of the inserting and fixing column (5) are respectively provided with a first isolation groove (10), the bottom of the lower protective shell (3) is provided with a rising groove (6), and the bottom of the inserting and fixing column (5) is provided with a second isolation groove (12).

3. The planar transformer for the switching power supply with the good heat dissipation effect as recited in claim 2, wherein: the outer surfaces of two sides of the bottom of the inserting and fixing column (5) are provided with connecting and attaching grooves (9), and the upper surfaces of two sides of the lower protective shell (3) are clamped in the connecting and attaching grooves (9).

4. The planar transformer for the switching power supply with the good heat dissipation effect as recited in claim 1, wherein: a clamping groove (7) of the transformer main body is formed in a gap between the upper protective shell (2) and the lower protective shell (3).

5. The planar transformer for the switching power supply with the good heat dissipation effect as recited in claim 1, wherein: the planar transformer main body (1) is mainly formed by combining a PCB (printed circuit board) 15, an insulating sheet (16) and a magnetic core block.

6. The planar transformer with the good heat dissipation effect for the switching power supply, according to claim 5, is characterized in that: the lower surface of the planar transformer main body (1) is attached to the upper surface of the radiating fin (17).

7. The planar transformer with the good heat dissipation effect for the switching power supply, according to claim 6, is characterized in that: the outer ring of the interpenetration fixing column (5) is sleeved with the planar transformer main body (1).