Planar transformer protective shell

Abstract

The utility model relates to the technical field of planar transformers, and discloses a planar transformer protective shell which comprises a lower shell, an upper shell, a penetrating fixing column, an edge sealing pressing strip and an iron core. According to the utility model, the iron core is sleeved at the top of the lower shell and is inserted outside the fixed column, and the edge sealing pressing strip is pressed to bend and deform, so that the edge sealing pressing strip and the flexible pressing strip can press and position the two sides of the iron core at the top of the upper shell, and the upper shell is inserted into the slots at the two sides of the lower shell through the F-shaped insertion plates at the two sides. The yielding groove in the bottom of the upper shell abuts against the flexible pressing strips on the two sides in a deformation mode, and therefore meshing positioning of the upper shell and the lower shell is achieved; the hollow groove formed in the middle of the upper shell communicates with the heat dissipation holes in the penetrating and inserting fixing columns through the bottom grating net, so that the heat dissipation holes in the penetrating and inserting fixing columns can communicate with the outside air in a large area through the grating net on the upper shell and the hollow groove, and the heat dissipation effect on the iron core is improved while dust prevention is conducted on the surface of the iron core.

Description

Technical Field

[0001] The utility model relates to the technical field of planar transformers, in particular to a protective shell for a planar transformer. Background Art

[0002] A planar transformer is a transformer with the characteristics of high frequency, low shape, small height and high operating frequency. The biggest difference between a planar transformer and a traditional transformer lies in the iron core and coil winding. A planar transformer uses a small-sized E-type, RM-type or toroidal ferrite core, which is usually made of high-frequency power ferrite material and has lower core loss at high frequencies. The winding is made of a multi-layer printed circuit board.

[0003] For example, the Chinese patent authorization announcement number is CN215643944U, "discloses a switching power supply planar transformer with good heat dissipation effect, specifically related to the mechanical field, including a planar transformer body, and the upper and lower outer surfaces of the planar transformer body are respectively clamped with an upper protective shell and a lower protective shell";

[0004] In the above-mentioned comparative documents, interlaced fixed columns are provided to improve the airflow interaction effect, and a No. 1 isolation slot, a vacant slot and a No. 2 isolation slot are specially provided, which play a role in making the isolation entities fit closely together, so that the gap formed is more conducive to the inflow and circulation of airflow;

[0005] However, when the above-mentioned planar transformer is actually used, the upper and lower shells are fixed by screwing, which makes it difficult to disassemble the iron core inside the transformer. In addition, the iron core is installed between the upper and lower shells, and the overall heat dissipation effect is poor only through the heat dissipation holes. Utility Model Content

[0006] The utility model aims to provide a planar transformer protective shell, which can realize convenient disassembly and assembly of upper and lower shells, thereby facilitating the disassembly of the iron core, and can improve the heat dissipation effect of the iron core while preventing dust from the surface of the iron core.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a planar transformer protective shell, comprising a lower shell, an upper shell, an interpenetrating fixing column, an edge sealing strip, and an iron core, baffles are respectively integrally formed on both sides of the lower shell, and slots are provided at equal intervals on adjacent surfaces of two groups of baffles, the upper shell is detachably mounted on the top of the lower shell, the interpenetrating fixing column is fixedly mounted at the middle of the lower shell, edge sealing strips are respectively integrally formed on both sides of the top of the interpenetrating fixing column, a toughness strip is integrally formed on the top of the edge sealing strip, plug plates are respectively integrally formed on both sides of the upper shell, a hollow groove is provided through the middle of the upper shell, and a grille is integrally formed at the bottom of the hollow groove.

[0008] Preferably, a placement groove matching the edge sealing strip is opened in the middle of the lower shell body, and a suspension groove is opened in the middle of the bottom surface of the lower shell body.

[0009] Preferably, both sides of the bottom of the upper shell are respectively provided with clearance grooves matching the tough pressure strips.

[0010] Preferably, the two sides and the bottom of the interpenetrating fixing column are respectively penetrated with a first heat dissipation hole and a second heat dissipation hole.

[0011] Preferably, the upper shell is slidably engaged in the inner wall of the slot through plug plates on both sides.

[0012] Preferably, the iron core is sleeved on the outside of the interpenetrating fixing column at the top of the lower shell, and the toughness strips on both sides of the top of the interpenetrating fixing column are respectively in contact with the clearance grooves at the bottom of the upper shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model arranges the iron core sleeve on the top of the lower shell and inserts the outside of the fixing column, and the edge sealing strip is bent and deformed, so that the edge sealing strip and the tough strip can be pressed and positioned on both sides of the iron core at the top of the upper shell, and the upper shell is inserted into the slots on both sides of the lower shell through the F-shaped plug-in plates on both sides, and the clearance groove at the bottom of the upper shell conflicts with the deformation of the tough strips on both sides, so that the upper shell and the lower shell are engaged and positioned, which solves the problem that the upper and lower protective shells of the existing transformer are fixed by screwing, making it difficult to disassemble the internal iron core of the transformer;

[0015] Compared with the existing transformer protective shell installation, there is no need to fix the protective shell with screws. The protective shell can be easily disassembled and assembled by plugging the slot and the plug-in board against the toughness strips on both sides of the iron core.

[0016] The utility model is connected with the heat dissipation holes inside the interlaced fixed column through the hollow groove opened in the middle of the upper shell body through the bottom grille net, so that the heat dissipation holes inside the interlaced fixed column can be connected with the outside air in a large area through the upper grille net and the hollow groove of the upper shell body. In this way, dust is prevented on the surface of the iron core and the heat dissipation effect of the iron core is improved, which solves the problem that the iron core is installed between the upper and lower shells and the overall heat dissipation effect is poor only through the heat dissipation holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the split structure of the upper shell and the lower shell in the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the interlaced fixed columns in the utility model;

[0020] Figure 4 It is a schematic diagram of the upper shell structure of the utility model.

[0021] In the figure: 1. lower shell; 2. upper shell; 3. interlaced fixing column; 4. edge sealing strip; 5. iron core; 11. baffle; 12. slot; 13. placement slot; 14. suspended slot; 21. plug-in board; 22. hollow slot; 23. grille; 24. give way slot; 31. first heat dissipation hole; 32. second heat dissipation hole; 41. toughness strip. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4 The utility model provides a technical solution: a planar transformer protective housing, comprising a lower housing 1, an upper housing 2, an interlaced fixing column 3, an edge sealing strip 4, and an iron core 5. Baffles 11 are formed integrally on both sides of the lower housing 1 by mold pressing, and slots 12 are provided at equal intervals on adjacent surfaces of two groups of baffles 11. The upper housing 2 can be detachably mounted on the top of the lower housing 1, and the interlaced fixing column 3 is fixedly mounted at the middle of the lower housing 1.

[0024] The top of the interlaced fixed column 3 is formed with edge strips 4 by a mold, and the top of the edge strip 4 is formed with a toughness strip 41 by mold pressing. The upper shell 2 is formed with plug plates 21 by a mold, and the middle of the upper shell 2 is penetrated by a hollow groove 22, and the bottom of the hollow groove 22 is formed with a grille 23 by mold pressing.

[0025] The U-shaped iron core 5 is sleeved on the outside of the interlaced fixing column 3 in the middle of the lower shell 1, and the iron core 5 is positioned by the upper shell 2 and the lower shell 1, thereby forming a planar transformer protective shell;

[0026] The iron core 5 is sleeved on the outside of the fixed column 3 inserted at the top of the lower shell 1, and the edge sealing strip 4 is bent and deformed by pressing, so that the edge sealing strip 4 and the tough strip 41 can be pressed and positioned on both sides of the iron core 5 on the top of the upper shell 2, and the upper shell 2 is inserted into the slots 12 on both sides of the lower shell 1 through the F-shaped plug-in plates 21 on both sides, and the yielding grooves 24 at the bottom of the upper shell 2 are deformed and conflict with the tough strips 41 on both sides, so as to realize the bite positioning of the upper shell 1 and the lower shell 2. Compared with the existing transformer protective shell installation, there is no need to fix the protective shell with screws, and the slots 12 and the plug-in plates 21 are plugged into the tough strips 41 on both sides of the iron core 5 to realize the more convenient disassembly and assembly of the protective shell;

[0027] The upper shell 2 is plugged into the lower shell 1. After the iron core 5 is positioned, the hollow groove 22 opened in the middle of the upper shell 2 is connected with the internal heat dissipation holes of the inserted fixing column 3 through the bottom grid mesh 23, so that the internal heat dissipation holes of the inserted fixing column 3 can be connected with the outside air over a large area through the upper grid mesh 23 of the upper shell 2 and the hollow groove 22, thereby improving the heat dissipation effect of the iron core 5 while preventing dust from the surface of the iron core 5.

[0028] Among them, a placement groove 13 matching the edge banding strip 4 is opened in the middle of the lower shell 1, and a suspension groove 14 is opened in the middle of the bottom surface of the lower shell 1. The suspension groove 14 at the bottom of the lower shell 1 is connected to the second heat dissipation hole 32 in the interlaced fixing column 3, so that the hot air generated at the iron core 5 can be discharged through the bottom of the lower shell 1.

[0029] Among them, the two sides of the bottom of the upper shell 2 are respectively provided with a clearance groove 24 matching the tough molding 41. The upper shell 2 is slidably engaged in the inner wall of the slot 12 through the two side plug plates 21. The iron core 5 is sleeved on the outside of the fixing column 3 inserted at the top of the lower shell 1. The tough moldings 41 on both sides of the top of the inserted fixing column 3 respectively abut against the clearance groove 24 at the bottom of the upper shell 2. The iron core 5 is sleeved on the outside of the fixing column 3 inserted at the top of the lower shell 1. By pressing the edge sealing molding 4 to bend and deform, the edge sealing molding 4 and the tough molding 41 can be pressed on both sides of the iron core 5 and positioned on the top of the upper shell 2.

[0030] Among them, the first heat dissipation hole 31 and the second heat dissipation hole 32 are respectively penetrated on both sides and the bottom of the interpenetrating fixing column 3, and the hollow groove 22 opened in the middle of the upper shell 2 is connected with the internal heat dissipation holes of the interpenetrating fixing column 3 through the bottom grid mesh 23, so that the internal heat dissipation holes of the interpenetrating fixing column 3 can be connected with the outside air in a large area through the upper grid mesh 23 and the hollow groove 22 of the upper shell 2, so that the dust on the surface of the iron core 5 is prevented while improving the heat dissipation effect of the iron core 5.

[0031] Working principle: When installing the transformer core 5, firstly sleeve the core 5 on the outside of the fixing column 3 inserted in the middle of the lower housing 1;

[0032] Then, the edge-sealing strip 4 is bent and deformed, so that the edge-sealing strip 4 and the toughness strip 41 can be pressed on both sides of the core 5 and positioned on the top of the upper shell 2.

[0033] Then, the upper shell 2 is inserted into the slots 12 on both sides of the lower shell 1 through the F-shaped plug plates 21 on both sides, and the clearance grooves 24 at the bottom of the upper shell 2 and the tough pressure strips 41 on both sides are deformed to conflict with each other, so that the upper shell 1 and the lower shell 2 are engaged and positioned;

[0034] When the planar transformer is working, the upper shell 2 is plugged into the lower shell 1 to position the iron core 5. The hollow groove 22 opened in the middle of the upper shell 2 is connected with the internal heat dissipation holes of the inserted fixing column 3 through the bottom grid mesh 23, so that the internal heat dissipation holes of the inserted fixing column 3 can be connected with the outside air over a large area through the upper grid mesh 23 of the upper shell 2 and the hollow groove 22, thereby improving the heat dissipation effect of the iron core 5 while preventing dust on the surface of the iron core 5.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments without departing from the principles of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A planar transformer protective housing, comprising a lower housing (1), an upper housing (2), an interlaced fixing column (3), an edge sealing strip (4), and an iron core (5), characterized in that: Baffles (11) are integrally formed on both sides of the lower shell (1), and slots (12) are provided at equal intervals on adjacent surfaces of two groups of baffles (11). The upper shell (2) is detachably mounted on the top of the lower shell (1), and the interpenetrating fixing column (3) is fixedly mounted at the middle of the lower shell (1). Edge sealing strips (4) are integrally formed on both sides of the top of the interpenetrating fixing column (3), and a toughness strip (41) is integrally formed on the top of the edge sealing strip (4). Insert plates (21) are integrally formed on both sides of the upper shell (2), and a hollow groove (22) is provided through the middle of the upper shell (2), and a grille (23) is integrally formed at the bottom of the hollow groove (22).

2. The planar transformer protective housing according to claim 1, characterized in that: A placement groove (13) matching the edge-sealing strip (4) is provided in the middle of the lower shell (1), and a suspension groove (14) is provided in the middle of the bottom surface of the lower shell (1).

3. The planar transformer protective housing according to claim 1, characterized in that: Both sides of the bottom of the upper shell (2) are respectively provided with clearance grooves (24) matching the tough pressure strip (41).

4. The planar transformer protective housing according to claim 1, characterized in that: The two sides and the bottom of the interpenetrating fixing column (3) are respectively penetrated with a first heat dissipation hole (31) and a second heat dissipation hole (32).

5. The planar transformer protective housing according to claim 1, characterized in that: The upper shell (2) is slidably engaged in the inner wall of the slot (12) via two side plug plates (21).

6. The planar transformer protective housing according to claim 3, characterized in that: The iron core (5) is sleeved on the outside of the interpenetrating fixing column (3) at the top of the lower shell (1), and the tough pressure strips (41) on both sides of the top of the interpenetrating fixing column (3) respectively abut against the clearance grooves (24) at the bottom of the upper shell (2).

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