Magnetic core fixing structure of high-frequency transformer

Abstract

According to the magnetic core fixing structure of the high-frequency transformer, two limiting fixing rods are rotated to drive a limiting fixing block to move, a threaded rod is in threaded connection with the inner wall of an isolation protection plate, so that a magnetic core is fixed through generated extrusion force, and an operator adjusts a fixing device according to the specific specification of the magnetic core; therefore, an operator can easily disassemble and reassemble, and the maintenance process is simplified; the heat-conducting fins fixedly connected between the inner walls of the isolation protection plates play a role in supporting the structure, the mechanical stability of the high-frequency transformer is enhanced, the heat-conducting fins serve as additional supporting pieces, the stability of the magnetic core under high-frequency vibration is ensured, meanwhile, the cooling fins can rapidly absorb heat generated by the magnetic core and diffuse the heat to the surfaces of the cooling fins, and the heat dissipation efficiency of the high-frequency transformer is improved. And the heat is dissipated into the air in a heat convection or radiation manner, so that the heat exchange area can be obviously increased, the transfer of the heat from the magnetic core to the environment is accelerated, and the heat is dissipated in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of power electronics, and particularly relates to a magnetic core fixing structure of a high-frequency transformer. Background Art

[0002] High-frequency transformers have important applications in many fields, including inverters, wireless communications, medical equipment, and consumer electronics. In inverters, high-frequency transformers are responsible for converting direct current into alternating current to meet the needs of different electrical equipment. These applications have placed high demands on the performance of high-frequency transformers. As a key component of high-frequency transformers, the stability and fixing method of the magnetic core in high-frequency transformers directly affect the performance and life of the transformer. Traditional methods of fixing the magnetic core mostly use screws or glue bonding, but these methods have problems such as easy loosening of the magnetic core, poor heat dissipation, and complex installation, which affect the working efficiency and reliability of the high-frequency transformer. Utility Model Content

[0003] The utility model aims to provide a magnetic core fixing structure of a high-frequency transformer to solve the existing problems.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model is a magnetic core fixing structure of a high-frequency transformer, comprising an isolation protection plate, a fixed connection plate welded to the lower surface of the isolation protection plate, limited position fixing threaded holes are provided on both sides of the isolation protection plate, the inner wall of the limited position fixing threaded hole is threadedly connected to a limited position fixing rod, one side of the limited position fixing rod is rotatably connected to a limited position fixing block, the two sides of the limited position fixing block are bolted to fixed support columns, one side of the two fixed support columns is welded to a sliding fixed block, the sliding fixed block is slidably connected to the isolation protection plate, during use, the operator drives the limited position fixing block to move by rotating the two limited position fixing rods, and the magnetic core is fixed by the extrusion force generated by the threaded connection between the threaded rod and the inner wall of the isolation protection plate, so that the utility model can adapt to magnetic cores of different sizes and shapes, the operator can adjust the fixing device according to the specific specifications of the magnetic core to make it more fitting and stable, and at the same time, the operator can easily disassemble and reassemble it without destroying the original fixing materials, such as glue or welding points. This greatly simplifies the maintenance process and reduces maintenance time and cost.

[0006] The limiting rubber corner protectors are fixedly connected at the corners of the inner walls of the isolation protection plate, and a number of heat conductive sheets are fixedly connected between the inner walls of the isolation protection plate. The limiting rubber corner protectors serve as buffer materials between the magnetic core and the fixed structure, absorbing vibrations and impacts during high-frequency operation, reducing the mechanical stress of the magnetic core, thereby protecting the magnetic core from damage and extending its service life. At the same time, rubber is an electrically insulating material that can prevent the risk of short circuits between the magnetic core and the metal frame, especially in humid or corrosive environments. The rubber corner protectors can provide additional electrical isolation protection. On the other hand, the soft rubber material can make the installation and disassembly of the magnetic core fixing structure easier, especially in situations where frequent maintenance or replacement of the magnetic core is required. The rubber corner protectors can be used as temporary fixing or positioning tools. A number of heat conductive sheets are fixedly connected between the inner walls of the isolation protection plate.

[0007] Furthermore, a plurality of connecting threaded holes are provided on the upper surface of the fixed connecting plate, and a heat dissipation groove is provided on the upper surface of the fixed connecting plate. The heat dissipation groove helps to increase the effective area of ​​heat exchange by introducing more surface area into the magnetic core fixing structure, so that more heat can be dissipated from the magnetic core and winding, thereby keeping the transformer running at a lower temperature.

[0008] Furthermore, the isolation protection plate is provided with sliding fixing grooves on both inner walls, the size and shape of the sliding fixing grooves are adapted to the sliding fixing blocks, and the isolation protection plate is made of insulating material and can provide electrical isolation, thereby avoiding short circuit or leakage accidents.

[0009] Furthermore, a ventilation and heat dissipation port is provided on one side of the isolation protection plate, and the size and shape of the ventilation and heat dissipation port are adapted to the heat conductive sheet. The heat dissipation port helps the hot air to be discharged from the inside of the transformer by providing a channel for air circulation, while allowing cold air to enter, thereby promoting the heat exchange process.

[0010] Furthermore, an arc-shaped limit groove and two rectangular limit grooves are provided on one side of the sliding fixed block, the arc-shaped limit groove is located between the two rectangular limit grooves, and an arc-shaped avoidance groove is provided at the corner of the rectangular limit groove. The avoidance groove can ensure that the fixing device will not physically interfere with the magnetic core or other components, especially during the installation or disassembly process, and can prevent damage to sensitive parts.

[0011] Furthermore, the limiting rubber corner guard is located above the sliding fixed block, the sliding fixed block is located above the heat conductive sheet, the heat conductive sheet is located above the fixed connecting plate, and the heat conductive sheet is located between the inner walls of the isolation protection plate, so that the heat conductive sheet plays a role of structural support, enhances the mechanical stability of the high-frequency transformer, and makes the heat conductive sheet serve as an additional support to ensure the stability of the magnetic core under high-frequency vibration. At the same time, the heat sink can quickly absorb the heat generated by the magnetic core and diffuse it to the surface of the heat sink, and then dissipate it into the air by heat convection or radiation, which can significantly increase the heat exchange area, thereby accelerating the transfer of heat from the magnetic core to the environment and dissipating the heat in time.

[0012] The utility model has the following beneficial effects:

[0013] The utility model drives the limit fixing block to move by rotating two limit fixing rods, and fixes the magnetic core by the extrusion force generated through the threaded connection between the threaded rod and the inner wall of the isolation protection plate, so that the operator can adjust the fixing device according to the specific specifications of the magnetic core, so that the utility model can adapt to magnetic cores of different sizes and shapes, making them more fit and stable, and at the same time, the operator can easily disassemble and reassemble without destroying the original fixing materials, such as glue or welding points. This greatly simplifies the maintenance process and reduces maintenance time and cost.

[0014] The utility model plays a role of structural support through the heat conductive sheet fixedly connected between the inner walls of the isolation protection plate, thereby enhancing the mechanical stability of the high-frequency transformer, so that the heat conductive sheet serves as an additional support member to ensure the stability of the magnetic core under high-frequency vibration. At the same time, the heat sink can quickly absorb the heat generated by the magnetic core and diffuse it to the surface of the heat sink, and then dissipate it into the air by means of thermal convection or radiation, which can significantly increase the heat exchange area, thereby accelerating the transfer of heat from the magnetic core to the environment and dissipating the heat in time.

[0015] The utility model uses the limiting rubber corner protector as a buffer material between the magnetic core and the fixed structure to absorb vibration and impact during high-frequency operation, reduce the mechanical stress of the magnetic core, thereby protecting the magnetic core from damage and extending its service life. At the same time, rubber is an electrical insulating material and can prevent the risk of short circuit between the magnetic core and the metal frame, especially in a humid or corrosive environment. The rubber corner protector can provide additional electrical isolation protection. On the other hand, the soft rubber material can make the installation and disassembly of the magnetic core fixing structure easier, especially in situations where frequent maintenance or replacement of the magnetic core is required, the rubber corner protector can be used as a temporary fixing or positioning tool.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a magnetic core fixing structure of a high-frequency transformer;

[0019] Figure 2 A top view of a magnetic core fixing structure of a high-frequency transformer;

[0020] Figure 3 for Figure 2 Cross-section of the middle AA;

[0021] Figure 4 for Figure 2 Cross-section of the BB.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Isolation protection plate; 101. Sliding fixed groove; 102. Ventilation and heat dissipation port; 2. Fixed connecting plate; 201. Limiting fixed threaded hole; 202. Connecting threaded hole; 203. Heat dissipation groove; 3. Limiting fixed rod; 4. Limiting fixed block; 5. Fixed support column; 6. Sliding fixed block; 601. Arc-shaped limiting groove; 602. Rectangular limiting groove; 603. Arc-shaped avoidance groove; 7. Limiting rubber corner guard; 8. Heat conducting sheet. DETAILED DESCRIPTION

[0024] 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 of 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.

[0025] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0026] See also Figure 1-Figure 4As shown, the utility model is a magnetic core fixing structure of a high-frequency transformer, including an isolation protection plate 1, a fixed connecting plate 2 is welded and connected to the lower surface of the isolation protection plate 1, limited fixing threaded holes 201 are provided on the opposite sides of the isolation protection plate 1, and the inner walls of the limited fixing threaded holes 201 are threadedly connected to limited fixing rods 3, and one side of the limited fixing rod 3 is rotatably connected to a limited fixing block 4, and the two opposite sides of the limited fixing block 4 are bolted with fixed support columns 5, and one side of the two fixed support columns 5 are welded and connected to sliding fixing blocks 6, and the sliding fixing block 6 is slidingly connected to the isolation protection plate 1. During use, the operator drives the limited fixing block 4 to move by rotating the two limited fixing rods 3, and the extrusion force generated by the threaded connection between the threaded rod and the inner wall of the isolation protection plate 1 fixes the magnetic core, which enables the utility model to adapt to magnetic cores of different sizes and shapes, and the operator can adjust the fixing device according to the specific specifications of the magnetic core to make it more fit and stable, and at the same time enables the operator to easily disassemble and reassemble without destroying the original fixing materials, such as glue or welding points. This greatly simplifies the maintenance process and reduces maintenance time and costs.

[0027] The limiting rubber corner protector 7 is fixedly connected to the corner of the inner wall of the isolation protection plate 1. The limiting rubber corner protector 7 serves as a buffer material between the magnetic core and the fixed structure, absorbs vibration and impact during high-frequency operation, reduces the mechanical stress of the magnetic core, thereby protecting the magnetic core from damage and extending its service life. At the same time, rubber is an electrical insulating material, which can prevent the risk of short circuit between the magnetic core and the metal frame, especially in a humid or corrosive environment. The rubber corner protector can provide additional electrical isolation protection. On the other hand, the soft rubber material can make the installation and disassembly of the magnetic core fixing structure easier, especially in situations where frequent maintenance or replacement of the magnetic core is required. The rubber corner protector can be used as a temporary fixing or positioning tool. A number of heat conductive sheets 8 are fixedly connected between the inner walls of the isolation protection plate 1.

[0028] Among them, a plurality of connecting threaded holes 202 are provided on the upper surface of the fixed connecting plate 2, and a heat dissipation groove 203 is provided on the upper surface of the fixed connecting plate 2. The heat dissipation groove 203 helps to increase the effective area of ​​heat exchange by introducing more surface area in the magnetic core fixing structure, so that more heat can be dissipated from the magnetic core and winding, thereby keeping the transformer running at a lower temperature. At the same time, when the high-frequency transformer is working, the magnetic core and winding will generate local hot spots due to eddy current, hysteresis loss and copper loss. The heat dissipation groove 203 can help disperse these hot spots, ensure a more uniform temperature distribution, and avoid local overheating.

[0029] Among them, the isolation protection plate 1 is provided with sliding fixing grooves 101 on both inner walls. The size and shape of the sliding fixing grooves 101 are adapted to the sliding fixing block 6. The isolation protection plate 1 is made of insulating material, so as to provide electrical isolation and prevent accidental electrical contact between the magnetic core and the transformer housing or other conductive parts, thereby avoiding short circuit or leakage accidents.

[0030] Among them, a ventilation and heat dissipation port 102 is set on one side of the isolation protection plate 1. The size and shape of the ventilation and heat dissipation port 102 are adapted to the heat conductive sheet 8. The heat dissipation port helps hot air to be discharged from the inside of the transformer by providing a channel for air circulation, while allowing cold air to enter, thereby promoting the heat exchange process.

[0031] Among them, an arc-shaped limit groove 601 and two rectangular limit grooves 602 are arranged on one side of the sliding fixing block 6. The arc-shaped limit groove 601 is located between the two rectangular limit grooves 602. An arc-shaped avoidance groove 603 is opened at the corner of the rectangular limit groove 602. The arc-shaped limit groove 601 can ensure that the fixing device will not physically interfere with the magnetic core or other components, especially during the installation or disassembly process, and can effectively prevent damage to sensitive components. At the same time, the arc-shaped limit groove 601 can also be used as a positioning reference point for the magnetic core to ensure that all components are accurately aligned, which is crucial to the performance of the high-frequency transformer, because even a slight offset may affect the electrical characteristics.

[0032] Among them, the limiting rubber corner guard 7 is located above the sliding fixed block 6, the sliding fixed block 6 is located above the heat conductive sheet 8, the heat conductive sheet 8 is located above the fixed connecting plate 2, and the heat conductive sheet 8 is located between the inner walls of the isolation protection plate 1, so that the heat conductive sheet 8 plays a role of structural support, enhances the mechanical stability of the high-frequency transformer, and makes the heat conductive sheet 8 serve as an additional support to ensure the stability of the magnetic core under high-frequency vibration. At the same time, the heat sink can quickly absorb the heat generated by the magnetic core and diffuse it to the surface of the heat sink, and then dissipate it into the air by heat convection or radiation, which can significantly increase the heat exchange area, thereby accelerating the transfer of heat from the magnetic core to the environment and dissipating the heat in time.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A magnetic core fixing structure of a high-frequency transformer, comprising an isolation protection plate (1), characterized in that: The lower surface of the isolation protection plate (1) is welded with a fixed connection plate (2); the isolation protection plate (1) is provided with limited fixing threaded holes (201) on opposite sides; the inner wall of the limited fixing threaded hole (201) is threadedly connected to a limited fixing rod (3); one side of the limited fixing rod (3) is rotatably connected to a limited fixing block (4); the limited fixing block (4) is bolted with fixed support columns (5) on opposite sides; one side of the two fixed support columns (5) is welded with a sliding fixing block (6); the sliding fixing block (6) is slidably connected to the isolation protection plate (1); the inner wall corners of the isolation protection plate (1) are fixedly connected to limited rubber corner guards (7); and a plurality of heat conducting plates (8) are fixedly connected between the inner walls of the isolation protection plate (1).

2. The magnetic core fixing structure of a high-frequency transformer according to claim 1, characterized in that: The upper surface of the fixed connection plate (2) is provided with a plurality of connection threaded holes (202), and the upper surface of the fixed connection plate (2) is provided with a heat dissipation groove (203).

3. The magnetic core fixing structure of a high-frequency transformer according to claim 1, characterized in that: The isolation protection plate (1) is provided with sliding fixing grooves (101) on both inner walls thereof, and the size and shape of the sliding fixing grooves (101) are adapted to the sliding fixing blocks (6).

4. The magnetic core fixing structure of a high-frequency transformer according to claim 1, characterized in that: A ventilation and heat dissipation opening (102) is provided on one side of the isolation protection plate (1), and the size and shape of the ventilation and heat dissipation opening (102) are adapted to the heat conducting plate (8).

5. The magnetic core fixing structure of a high-frequency transformer according to claim 1, characterized in that: A side surface of the sliding fixed block (6) is provided with an arc-shaped limiting groove (601) and two rectangular limiting grooves (602); the arc-shaped limiting groove (601) is located between the two rectangular limiting grooves (602); and an arc-shaped avoiding groove (603) is provided at a corner of the rectangular limiting groove (602).

6. The magnetic core fixing structure of a high-frequency transformer according to claim 1, characterized in that: The limiting rubber corner guard (7) is located above the sliding fixed block (6), the sliding fixed block (6) is located above the heat conducting plate (8), and the heat conducting plate (8) is located above the fixed connecting plate (2).

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