Planar transformer with good insulating property

Abstract

The utility model relates to the technical field of transformers, and discloses a planar transformer with good insulating property, which comprises an iron core seat, a positioning shaft is connected inside the iron core seat, a press-fitting cover is connected to the top of the iron core seat and the top of the positioning shaft, a plurality of windings are arranged between the iron core seat and the positioning shaft, and the iron core seat is connected with the positioning shaft. The winding is pressed between the iron core seat and the positioning shaft through the iron core seat, and four corners of opposite surfaces of the pressing cover and the iron core seat are respectively connected with a magnetic attraction block; and the winding comprises an insulating cover which is pressed between the iron core seat and the positioning shaft. According to the utility model, due to the arrangement of the winding, the PCB winding plates can be conveniently installed through the protection grooves, so that a good insulation and protection effect can be achieved on each PCB winding plate under the cooperation of the insulation covers, and when the PCB winding plates are press-fitted through the press-fitting cover under the cooperation of the buffer protection plate and the heat dissipation assembly, the heat dissipation efficiency is greatly improved. And the press-fitting damage degree of the PCB winding plate can be reduced to the greatest extent, so that the service life of the PCB winding plate can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and more specifically, to a planar transformer with good insulation performance. Background Art

[0002] Planar transformer is a planar structure transformer developed after a long period of electronic transformer development. The biggest difference compared with traditional transformers lies in the iron core and coil winding. The winding of the planar transformer is made by etching copper foil on the PCB board using the PCB board making process and spirally stacking it, which forms the magnetic circuit of the transformer with the high-frequency magnetic core.

[0003] The structure of planar transformers is more compact and reasonable, which greatly promotes the development of precision instruments. However, the existing planar transformer PCB winding boards are mostly insulated from each other by stacking insulating plates. However, there is a lack of insulation protection around the PCB board, and it is also impossible to avoid side bumps on the PCB board, which can easily cause damage. Therefore, it needs to be improved. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a planar transformer with good insulation performance.

[0005] To achieve the above object, the utility model provides the following technical solutions: a planar transformer with good insulation performance, comprising an iron core seat, a positioning shaft is connected inside the iron core seat, a press-fit cover is connected to the top of the iron core seat and the positioning shaft, a plurality of windings are arranged between the iron core seat and the positioning shaft, the windings are press-fitted between the iron core seat and the positioning shaft through the iron core seat, and a magnetic block is connected to the four corners of the press-fit cover and the facing surface of the iron core seat;

[0006] The winding includes an insulating cover pressed between the core seat and the positioning shaft, a positioning hole is provided in the middle of the insulating cover, a protective groove is provided on the top of the insulating cover, a PCB winding board is clamped inside the protective groove, and connecting grooves are provided on the front and rear sides of the insulating cover, a connector is clamped inside the connecting groove, and the connector is connected to the PCB winding board.

[0007] As a preferred technical solution of the utility model, the connector passes through the connecting groove and extends to the front and rear sides of the insulating cover. The depth of the connecting groove is less than the depth of the protective groove. The depths of the protective groove and the connecting groove are respectively adapted to the thickness of the PCB winding board and the connector.

[0008] As a preferred technical solution of the utility model, the outer ends of a plurality of connectors pass through the connecting groove and extend to the outside of the insulating cover and are connected to the second connecting column.

[0009] As a preferred technical solution of the utility model, a plurality of heat dissipation components are clamped inside the core seat and the positioning shaft, and a buffer protection plate located above a plurality of windings is also clamped between the core seat and the positioning shaft. The plurality of heat dissipation components and the buffer protection plates correspond to the windings one by one, two adjacent windings are separated by the heat dissipation components, and the plurality of windings and heat dissipation components are stacked alternately.

[0010] As a preferred technical solution of the utility model, the buffer protection plate and the heat dissipation assembly have the same structure, and both the buffer protection plate and the heat dissipation assembly include a heat insulation plate fixedly connected to the insulating cover, and a heat dissipation ventilation groove is opened at the bottom of the heat insulation plate.

[0011] As a preferred technical solution of the utility model, the positioning shaft includes a positioning core integrally formed inside the core seat, two left and right connecting grooves are opened at the top of the inner cavity of the positioning core, and two left and right positioning grooves are opened inside the positioning core, the positioning grooves correspond to the connecting grooves one by one, and the lower end of the connecting groove is connected to one end of the positioning groove.

[0012] As a preferred technical solution of the utility model, the press-fit cover includes a packaging cover plate covering the top of the core seat, a first connecting column is fixedly connected to the top of the inner cavity of the packaging cover plate, the lower end of the first connecting column is movably sleeved on the inside of the positioning core, the outer surface of the first connecting column is fixedly connected to two left and right positioning slides, and the positioning slide is slidably engaged in the connecting slide groove and the inside of the positioning slide groove.

[0013] As a preferred technical solution of the utility model, the packaging cover plate is internally slidably clamped with a press plate, the press plate is movably sleeved on the outer surface of the first connecting column, the press plate is located above the positioning slider, and the first connecting column is internally provided with a return spring located at the top of the press plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] Due to the arrangement of the winding, the utility model can facilitate the installation of the PCB winding board through the protective groove, and then with the cooperation of the insulating cover, it can have a good insulation protection effect on each PCB winding board. Moreover, with the cooperation of the buffer protective plate and the heat dissipation component, when the PCB winding board is pressed through the press-fitting cover, the press-fitting damage degree of the PCB winding board can be reduced to the greatest extent, thereby helping to extend the service life of the PCB winding board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the front side of the utility model;

[0018] Figure 3 It is a disassembly schematic diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the disassembly of the winding of the utility model.

[0020] In the figure: 1. core seat; 2. positioning shaft; 21. positioning core; 22. connecting slide; 23. positioning slide; 3. press-fit cover; 31. packaging cover; 32. first connecting column; 33. positioning slider; 34. press-fit plate; 35. reset spring; 4. winding; 41. insulating cover; 42. protective groove; 43. PCB winding board; 44. positioning hole; 45. connecting groove; 5. buffer protective plate; 6. connector; 7. second connecting column; 8. heat dissipation assembly; 81. heat insulation board; 82. heat dissipation ventilation groove; 9. magnetic block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in 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 in 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] like Figures 1 to 4 As shown, the utility model provides a planar transformer with good insulation performance, including an iron core seat 1, a positioning shaft 2 is connected inside the iron core seat 1, a press-fit cover 3 is connected to the top of the iron core seat 1 and the positioning shaft 2, a plurality of windings 4 are arranged between the iron core seat 1 and the positioning shaft 2, the windings 4 are press-fitted between the iron core seat 1 and the positioning shaft 2 through the iron core seat 1, and a magnetic suction block 9 is connected to the four corners of the facing surfaces of the press-fit cover 3 and the iron core seat 1;

[0023] The winding 4 includes an insulating cover 41 pressed between the core seat 1 and the positioning shaft 2, a positioning hole 44 is opened in the middle of the insulating cover 41, a protective groove 42 is opened on the top of the insulating cover 41, a PCB winding board 43 is clamped inside the protective groove 42, and connecting grooves 45 are opened on the front and back sides of the insulating cover 41, and a connector 6 is clamped inside the connecting groove 45, and the connector 6 is connected to the PCB winding board 43; due to the setting of the winding 4, the installation of the PCB winding board 43 can be facilitated through the protective groove 42, and then with the cooperation of the insulating cover 41, each PCB winding board 43 can have a good insulation protection effect, and when the PCB winding board 43 is pressed through the press-fitting cover 3 with the cooperation of the buffer protective plate 5 and the heat dissipation component 8, the degree of press-fitting damage to the PCB winding board 43 can be minimized to the greatest extent, thereby helping to extend the service life of the PCB winding board 43.

[0024] Among them, the connector 6 passes through the connecting groove 45 and extends to the front and rear sides of the insulating cover 41. The depth of the connecting groove 45 is less than the depth of the protective groove 42. The depths of the protective groove 42 and the connecting groove 45 are respectively adapted to the thickness of the PCB winding plate 43 and the connector 6. Due to the setting of the connecting groove 45, the installation of the connector 6 can be facilitated, thereby ensuring that the PCB winding plates 43 can be connected to each other through the second connecting column 7, thereby achieving the effect of increasing the winding.

[0025] The outer ends of the plurality of connectors 6 pass through the connecting groove 45 and extend to the outside of the insulating cover 41 and are connected to the second connecting column 7 .

[0026] Among them, a plurality of heat dissipation components 8 are clamped inside the core seat 1 and the positioning shaft 2, and a buffer protection plate 5 located above the plurality of windings 4 is also clamped between the core seat 1 and the positioning shaft 2. The plurality of heat dissipation components 8 and the buffer protection plate 5 correspond to the windings 4 one by one, and two adjacent windings 4 are separated by the heat dissipation components 8, and the plurality of windings 4 and the heat dissipation components 8 are stacked alternately; due to the arrangement of the buffer protection plate 5 and the heat dissipation components 8, the plurality of windings 4 can be stacked alternately, which helps to reduce the extrusion force acting on the plurality of windings 4 during press-fitting, thereby ensuring the compactness of the press-fitting of the plurality of windings 4 and avoiding the damage strength thereof.

[0027] Among them, the buffer protection plate 5 and the heat dissipation component 8 have the same structure. The buffer protection plate 5 and the heat dissipation component 8 both include a heat insulation plate 81 fixedly connected to the insulating cover 41, and a heat dissipation ventilation groove 82 is opened at the bottom of the heat insulation plate 81; due to the setting of the heat insulation plate 81, the heat generated by adjacent PCB winding plates 43 can be prevented from flowing to each other, thereby reducing the circulation space for the heat generated in each winding 4, so that it can enter the heat dissipation ventilation groove 82 in time, which not only helps to dissipate heat, but also greatly reduces the retention time of heat around the PCB winding plate 43, effectively reducing the heat loss rate of the PCB winding plate 43.

[0028] Among them, the positioning shaft 2 includes a positioning core 21 integrally formed inside the core seat 1, and two left and right connecting grooves 22 are opened at the top of the inner cavity of the positioning core 21. Two left and right positioning grooves 23 are opened inside the positioning core 21. The positioning grooves 23 correspond to the connecting grooves 22 one by one, and the lower end of the connecting groove 22 is connected to one end of the positioning groove 23.

[0029] Among them, the press-fit cover 3 includes a packaging cover plate 31 covering the top of the core seat 1, and a first connecting column 32 is fixedly connected to the top of the inner cavity of the packaging cover plate 31. The lower end of the first connecting column 32 is movably sleeved in the interior of the positioning core 21. The outer surface of the first connecting column 32 is fixedly connected to the left and right positioning slide blocks 33, and the positioning slide block 33 is slidably engaged in the connecting slide groove 22 and the interior of the positioning slide groove 23.

[0030] Among them, the packaging cover plate 31 is internally slidably clamped with a press plate 34, and the press plate 34 is movably sleeved on the outer surface of the first connecting column 32. The press plate 34 is located above the positioning slider 33, and the first connecting column 32 is internally provided with a return spring 35 located at the top of the press plate 34; due to the setting of the return spring 35, with the cooperation of the positioning slider 33 and the connecting slide groove 22 and the positioning slide groove 23, the first connecting column 32 can be further inserted into the interior of the positioning iron core 21, so that the press plate 34 can be pressed into the winding 4 through the buffer protection plate 5 under the action of the elastic force of the return spring 35.

[0031] The working principle and use process of this utility model:

[0032] Assemble the equipment as shown in the figure, insert the PCB winding plate 43 into the protective groove 42 at the top of the insulating cover 41, and then stack the assembled insulating cover 41, PCB winding plate 43 and heat dissipation assembly 8 as a whole in sequence and put them between the core seat 1 and the positioning core 21, and then install the press-fit cover 3, that is, control the first connecting column 32 through the packaging cover plate 31 to insert it into the positioning core 21, and then rotate the packaging cover plate 31 to drive the two positioning sliders 33 to rotate through the first connecting column 32, so that the positioning slider 33 can be inserted into the connecting slide groove 22, and then the connection between the press-fit cover 3 and the core seat 1 can be completed, and then continue to rotate the packaging cover plate 31 to make the positioning slider 33 inserted into the positioning slide groove 23 until the packaging cover plate 31 is aligned with the core seat 1, and the magnetic suction blocks 9 between the facing surfaces of the two correspond one to one;

[0033] When the positioning slider 33 moves along the connecting slot 22 , it can drive the packaging cover plate 31 to move down slowly, and make the pressing plate 34 squeeze the buffer protection plate 5 , and compress the connecting slot 45 under the reaction force to increase its elastic recovery effect, thereby completing the pressing and fixing of the winding 4 .

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

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

Claims

1. A planar transformer with good insulation performance, comprising a core base (1), characterized in that: The core seat (1) is internally connected to a positioning shaft (2), a press-fit cover (3) is connected to the top of the core seat (1) and the positioning shaft (2), a plurality of windings (4) are arranged between the core seat (1) and the positioning shaft (2), the windings (4) are press-fitted between the core seat (1) and the positioning shaft (2) through the core seat (1), and a magnetic attraction block (9) is connected to each of the four corners of the facing surfaces of the press-fit cover (3) and the core seat (1); The winding (4) comprises an insulating cover (41) pressed between the core seat (1) and the positioning shaft (2); a positioning hole (44) is provided in the middle of the insulating cover (41); a protective groove (42) is provided at the top of the insulating cover (41); a PCB winding board (43) is clamped inside the protective groove (42); connecting grooves (45) are provided on both the front and rear sides of the insulating cover (41); a connector (6) is clamped inside the connecting groove (45); and the connector (6) is connected to the PCB winding board (43).

2. A planar transformer with good insulation performance according to claim 1, characterized in that: The connector (6) passes through the connecting groove (45) and extends to the front and rear sides of the insulating cover (41); the depth of the connecting groove (45) is less than the depth of the protective groove (42); the depths of the protective groove (42) and the connecting groove (45) are respectively adapted to the thickness of the PCB winding plate (43) and the connector (6).

3. A planar transformer with good insulation performance according to claim 1, characterized in that: The outer ends of a plurality of connectors (6) pass through the connecting groove (45) and extend to the outside of the insulating cover (41) and are connected to a second connecting column (7).

4. A planar transformer with good insulation performance according to claim 1, characterized in that: A plurality of heat dissipation components (8) are clamped inside the core seat (1) and the positioning shaft (2); a buffer protection plate (5) located above the plurality of windings (4) is also clamped between the core seat (1) and the positioning shaft (2); the plurality of heat dissipation components (8) and the buffer protection plate (5) correspond to the windings (4) one by one; two adjacent windings (4) are separated by the heat dissipation components (8); and the plurality of windings (4) and the heat dissipation components (8) are alternately stacked.

5. A planar transformer with good insulation performance according to claim 4, characterized in that: The buffer protection plate (5) and the heat dissipation assembly (8) have the same structure. Both the buffer protection plate (5) and the heat dissipation assembly (8) include a heat insulation plate (81) fixedly connected to the insulating cover (41), and a heat dissipation ventilation groove (82) is provided at the bottom of the heat insulation plate (81).

6. A planar transformer with good insulation performance according to claim 1, characterized in that: The positioning shaft (2) includes a positioning core (21) integrally formed inside the core seat (1), two left and right connecting grooves (22) are provided at the top of the inner cavity of the positioning core (21), and two left and right positioning grooves (23) are provided inside the positioning core (21), the positioning grooves (23) correspond to the connecting grooves (22) one by one, and the lower end of the connecting groove (22) is connected to one end of the positioning groove (23).

7. A planar transformer with good insulation performance according to claim 6, characterized in that: The press-fit cover (3) includes a packaging cover plate (31) covering the top of the core seat (1); a first connecting column (32) is fixedly connected to the top of the inner cavity of the packaging cover plate (31); the lower end of the first connecting column (32) is movably sleeved inside the positioning core (21); the outer surface of the first connecting column (32) is fixedly connected to two left and right positioning slide blocks (33); the positioning slide blocks (33) are slidably engaged in the connection slide groove (22) and the inside of the positioning slide groove (23).

8. A planar transformer with good insulation performance according to claim 7, characterized in that: The packaging cover plate (31) is internally slidably clamped with a pressing plate (34), and the pressing plate (34) is movably sleeved on the outer surface of the first connecting column (32). The pressing plate (34) is located above the positioning slider (33), and the first connecting column (32) is internally provided with a return spring (35) located at the top of the pressing plate (34).

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