CN217468154U

CN217468154U - Transformer for display power supply

Info

Publication number: CN217468154U
Application number: CN202221211714.3U
Authority: CN
Inventors: 周治邦
Original assignee: Foshan Shunde Majia Technology Co ltd
Current assignee: Foshan Shunde Majia Technology Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-20
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses a transformer for display power, including the base, set up two magnetic cores in the relative both sides of base, and respectively around locating primary winding and secondary winding between two magnetic cores, be provided with first dabber on the iron core, and set up the second dabber in first dabber both sides respectively, primary winding is around establishing first dabber, and secondary winding sets up in one side of primary winding, and secondary winding is around establishing first dabber and second dabber, and secondary winding is the lamellar structure. This transformer, through with integral magnetic core design in the past for the split type magnetic core of two relative settings, can be convenient for the assembly of primary winding and secondary and magnetic core, can design the more flattening with the winding installation space between two magnetic cores moreover for the transformer's volume is more small and exquisite compact, and secondary is the lamellar structure moreover, and furthest has reduced the holistic thickness of transformer, is favorable to being applied to inside the more frivolous display with the transformer.

Description

Transformer for display power supply

Technical Field

The utility model relates to a transformer correlation technique field especially relates to a transformer for display power.

Background

The electronic transformer, which is the largest component in LED displays, is extremely thin, and is very important for producing ultra-thin LED displays. The electronic transformer in the LED display mostly adopts a split-slot horizontal design, and due to the requirement of working power, a lead used by a transformer coil needs to meet the requirements of bearing enough current and achieving heating and temperature rise, so that the limitation that the thickness of the electronic transformer for the LED display at present cannot be lower than 14mm is caused. The LED display has the advantages of excellent picture quality, long service life, energy conservation, environmental protection and the like, and is a TV development direction acknowledged in the industry. However, the LED cannot directly use the civil ac power when operating, so all the LED display devices include a power conversion module, and most of them adopt a built-in power conversion module. The ultra-thin is the development trend of the LED display, the ultra-thin LED display is produced, the power conversion module serving as a power supply needs to be ultra-thin firstly, and the first part directly restricting the ultra-thin of the power converter is the electronic transformer. The transformer is used as the most important electronic part in the power converter, and plays an important role in electric energy conversion and insulation isolation in a circuit. The conventional electronic transformer has larger thickness, which is not beneficial to further thinning the LED display. In view of the above situation, an ultrathin electronic transformer for LED display is proposed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transformer for display power, it has small in size, and simple structure is convenient for the characteristics of assembly to overcome the not enough that exists among the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a transformer for display power, its characterized in that includes the base, sets up two magnetic cores of the relative both sides of base and respectively around locating two primary winding and secondary winding between the magnetic core, be provided with first dabber on the iron core and set up respectively the second dabber of first dabber both sides, primary winding is around establishing first dabber, secondary winding sets up one side of primary winding, just secondary winding is around establishing first dabber and second dabber, secondary winding is the sheet structure.

In one embodiment, the secondary winding includes at least one metal sheet, and a first through hole for the first mandrel to pass through and a second through hole for the second mandrel to pass through are formed in the metal sheet.

In one embodiment, the metal sheet is provided with a separation groove.

In one embodiment, the metal sheet is a copper sheet or an aluminum sheet.

In one embodiment, the outer surface of the metal sheet is wrapped with an insulating film.

In one embodiment, the primary winding comprises at least one coil, and the coil is formed by winding a wire.

In one embodiment, the magnetic core further comprises a bottom plate, the base is provided with a containing groove corresponding to the bottom plate, the first mandrel and the second mandrel are connected to one side of the bottom plate, and the corner of the first mandrel and the corner of the second mandrel are in arc surface transition.

In one embodiment, the transformer further comprises a plug, the plug is connected with the base, at least two input pins are arranged on the plug, and the input pins are electrically connected with the primary winding.

In one embodiment, a wire groove is formed at one end of the plug, which is connected with the base.

In one embodiment, at least two output pins are provided on one side of the secondary winding.

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

the utility model discloses a transformer for display power, through the split type magnetic core that will integral magnetic core design in the past be two relative settings, can be convenient for the assembly of primary and secondary winding and magnetic core, and can design the winding installation space between two magnetic cores more the flattening moreover, make the small and exquisite compactness of transformer volume, secondary winding is sheet structure moreover, furthest has reduced the holistic thickness of transformer, be favorable to being applied to inside the more frivolous display with the transformer.

Drawings

Fig. 1 is a schematic structural diagram of a transformer for a display power supply according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of another perspective structure of the transformer for the display power supply shown in FIG. 1;

FIG. 3 is an exploded view of the transformer for the display power supply shown in FIG. 1;

FIG. 4 is a schematic diagram of a magnetic core of the transformer for a display power supply shown in FIG. 3;

fig. 5 is a schematic diagram of a secondary winding of the transformer for the display power supply shown in fig. 3.

Reference is made to the accompanying drawings in which:

a transformer 100 for a display power supply;

a base 10, a receiving groove 11; a magnetic core 20, a bottom plate 21, a first core shaft 22, a second core shaft 23; the secondary winding 30, the metal sheet 31, the first through hole 311, the second through hole 312, the partition groove 313 and the output pin 314; plug 40, input pin 41, wire slot 42.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When the number of an element is referred to as "a plurality," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The present invention will be described in detail with reference to embodiments shown in the drawings:

referring to fig. 1 to 5, a transformer 100 for a display power supply according to a preferred embodiment of the present invention includes a base 10, two magnetic cores 20 disposed on opposite sides of the base 10, and a primary winding (not shown) and a secondary winding 30 respectively wound between the two magnetic cores 20, the iron cores are provided with a first mandrel 22 and a second mandrel 23 respectively disposed on two sides of the first mandrel 22, the primary winding is wound around the first mandrel 22, the secondary winding 30 is disposed on one side of the primary winding, the secondary winding 30 is wound around the first mandrel 22 and the second mandrel 23, and the secondary winding 30 is of a sheet structure. The transformer 100 for a power supply of a display has the characteristics of small volume, simple structure and convenient assembly.

As shown in fig. 3 and 4, the base 10 is a rectangular parallelepiped structure made of flat plastic material, and the base 10 is provided with a through receiving groove 11. The two magnetic cores 20 are oppositely arranged on two sides of the base 10 respectively, and the opposite sides of the two magnetic cores 20 are connected with each other. Further, the magnetic core 20 includes a bottom plate 21, a first core shaft 22 and two second core shafts 23, the number of the second core shafts 23 is two, the first core shaft 22 and the second core shafts 23 are connected to one side of the bottom plate 21, the first core shaft 22 is located in the middle of the bottom plate 21, and the two second core shafts 23 are respectively disposed on two sides of the first core shaft 22; in order to avoid the damage of the insulation layer of the winding wound on the magnetic core 20, the end corner of the first core shaft 22 and the end corner of the second core shaft 23 are in arc transition; in this embodiment, the first mandrel 22 is in the shape of an elliptic cylinder, and the second mandrel 23 is in the shape of a rectangular parallelepiped, but in other embodiments, the first mandrel 22 and the second mandrel 23 may be in other shapes, and are not limited to the shapes shown in the drawings. When the magnetic cores 20 are assembled with the base 10, the bottom plate 21 of one of the magnetic cores 10 is arranged in the accommodating groove 11, then the first core shaft 22 and the second core shaft 23 extend outwards from the accommodating groove 11, and the end surfaces of the first core shaft 22 and the second core shaft 23 of the other magnetic core 10 are abutted to the end surfaces of the first core shaft 22 and the second core shaft 23 of the previous magnetic core 10, so that the overall height of the magnetic core 20 assembled with the base 10 can be reduced, and the height of the transformer is more flattened.

The primary winding (not shown) includes at least one coil, and the coil is formed by winding a wire, and the wire is an enameled wire. The primary winding is wound around the first core 22 so that the shape of the inner bore of the coil corresponds to the shape of the first core 22.

As shown in fig. 1 to 3 and 5, the secondary winding 30 is disposed on the side of the primary winding close to the base 10, and the end surface of the secondary winding 30 is in close contact with the end surface of the base 10, thereby preventing the secondary winding 30 from being deformed. The secondary winding 30 is a sheet structure, the secondary winding 30 includes at least one metal sheet 31, and a first through hole 311 for the first mandrel 22 to penetrate through and a second through hole 312 for the second mandrel 23 to penetrate through are formed in the metal sheet 31; in this embodiment, the number of the metal sheets 31 is two, the two metal sheets 31 are stacked, and the two metal sheets are electrically connected. Furthermore, the metal sheet 31 is provided with a separating groove 313, and the separating groove 313 can separate the whole metal sheet 31 into mutually connected circuit paths to prolong the length of the circuit paths, so that the separating grooves 313 with different shapes can be designed according to the transformation ratio of the transformer to realize different transformation requirements. In order to prevent the metal sheet 31 from short-circuiting, the outer surface of the metal sheet 31 is covered with an insulating film. Optionally, the metal sheet 31 is a copper sheet or an aluminum sheet, and the metal sheet material 31 is preferably a copper sheet. Further, at least two output pins 314 are disposed on the edge of the metal sheet 31, in this embodiment, three output pins 314 are disposed. The secondary winding 30 of the utility model is formed by stacking the metal sheets 31, which can reduce the difficulty of production and assembly, the single metal sheet 31 can be integrally formed by copper sheet punching, and after punching forming, the plurality of metal sheets 31 are stacked, which is suitable for mass production and is beneficial to reducing the production cost; in addition, the secondary winding 30 formed by laminating the metal sheets 31 has a reduced thickness compared with the conventional coil winding, which is beneficial to realizing the lightness and thinness of the transformer and is more suitable for the development and production of the display which pursues the lightness and thinness at present.

In an embodiment, in order to facilitate the installation of the transformer 100 for a display power supply on a PCB board inside a display, the transformer 100 for a display power supply further includes a plug 40, the plug 40 is connected to the base 10, at least two input pins 41 are disposed on the plug 40, the input pins 41 are electrically connected to coils of the primary winding, the number of the input pins 41 corresponds to the number of the coils of the primary winding, and one coil corresponds to two input pins 41; in this embodiment, the number of coils is two, and the number of input pins 41 is four. Further, in order to facilitate wiring, a wire slot 42 is provided at one end of the plug 40 connected to the base 10, and the wire slot 42 is used for a wire of the coil to penetrate through.

During assembly, the bottom plate 21 of one of the magnetic cores 20 is placed in the accommodating groove 11, then the secondary winding 30 is sleeved on the first core shaft 22 and the second core shaft 23, so that the secondary winding 30 is abutted against the end face of the base 10, then the primary winding is sleeved on the first core shaft 22, then the other magnetic core 20 is covered with the one magnetic core 20, an adhesive such as epoxy resin is coated at the joint of the two magnetic cores 20, the two magnetic cores 20 are fixed into a whole, and finally, the coil lead of the primary winding is correspondingly welded with the input pin 41 on the plug 40.

The utility model discloses a transformer 100 for display power, through the split type magnetic core 20 that will integral magnetic core 20 design in the past be two relative settings, primary winding and secondary winding 30 and the assembly of magnetic core 20 can be convenient for, and can design the winding installation space between two magnetic cores 20 more the platyzization, make the small and exquisite compactness more of transformer's volume, and secondary winding 30 is sheet structure, furthest has reduced the holistic thickness of transformer, be favorable to being applied to inside the more frivolous display with the transformer.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a transformer for display power, its characterized in that includes the base, sets up two magnetic cores of the relative both sides of base and respectively around locating two primary winding and secondary winding between the magnetic core, be provided with first dabber on the magnetic core and set up respectively the second dabber of first dabber both sides, primary winding is around establishing first dabber, secondary winding sets up one side of primary winding, just secondary winding is around establishing first dabber and second dabber, secondary winding is the sheet structure.

2. The transformer according to claim 1, wherein the secondary winding comprises at least one metal plate, and the metal plate is provided with a first through hole for the first mandrel to pass through and a second through hole for the second mandrel to pass through.

3. The transformer for a power supply of a display device according to claim 2, wherein the metal sheet is formed with a cut-off groove.

4. The transformer for a power supply of a display device according to claim 2, wherein the metal sheet is a copper sheet or an aluminum sheet.

5. The transformer for a power supply of a display device according to claim 2, wherein an outer surface of the metal sheet is covered with an insulating film.

6. The transformer for a power supply of a display device according to claim 1, wherein the primary winding comprises at least one coil wound with a wire.

7. The transformer of claim 1, wherein the magnetic core further comprises a bottom plate, the base is provided with a receiving groove corresponding to the bottom plate, the first mandrel and the second mandrel are connected to one side of the bottom plate, and an end of the first mandrel and an end of the second mandrel are in arc transition.

8. The transformer for a power supply of a display of claim 1, further comprising a plug, wherein the plug is connected to the base, wherein the plug is provided with at least two input pins, and wherein the input pins are electrically connected to the primary winding.

9. The transformer for a display power supply of claim 8, wherein an end of the plug connected to the base is provided with a wire slot.

10. The transformer for a power supply of a display device according to claim 1, wherein one side of the secondary winding is provided with at least two output pins.