A symmetrical half-bridge patch high frequency transformer

Abstract

The utility model relates to high frequency transformer technical field discloses a kind of symmetric half-bridge patch high-frequency transformer, including framework, the top front and rear end of the framework is fixedly connected with limiting plate, the top and bottom of the framework are inserted with magnetic core, the front and rear end of the framework is opened with several placing grooves from left to right, the bottom of the framework is fixedly connected with pin, the inner wall of the placing groove is opened with first limiting groove in left and right sides, the front and rear end right side of the framework is opened with second limiting groove, the front and rear end of the framework is provided with rotating mechanism, the bottom front and rear end of the framework is fixedly connected with L type winding rod. The utility model is driven connecting plate and briquetting by rotating rotating rod, makes first limiting bump insert first limiting groove, second limiting bump inserts second limiting groove, through briquetting coil, realize the fixed limit of coil in placing groove, effectively limit the displacement of coil in placing groove, avoid coil vibration loose when high-frequency work.

Description

Technical Field

[0001] This utility model relates to the field of high-frequency transformer technology, and in particular to a symmetrical half-bridge patch high-frequency transformer. Background Technology

[0002] High-frequency transformers are a type of power transformer that operates at frequencies significantly exceeding the intermediate frequency (10kHz) range. Due to their high-frequency operating characteristics, they occupy a core position in modern power electronic equipment, with wide-ranging applications and critical functions. In practical applications, high-frequency transformers are highly adaptable, with core applications encompassing high-frequency switching power supplies, high-frequency inverter power supplies, and high-frequency inverter welding machines. In high-frequency switching power supplies, they act as the core component, serving as the high-frequency power supply transformer, undertaking the tasks of power conversion and transmission, and helping the switching power supply achieve efficient voltage regulation and energy supply. In high-frequency inverter power supplies and high-frequency inverter welding machines, they function as the high-frequency inverter transformer, converting direct current to high-frequency alternating current through high-frequency inverter technology, while simultaneously performing voltage level conversion to meet the specific requirements of the equipment for power form and parameters.

[0003] Existing high-frequency transformers require manual pulling of the coil during the pin soldering stage, which can easily lead to messy and loose wiring, making it difficult to limit the position. Furthermore, after the coil falls off the pin, the entire winding structure needs to be disassembled for repair. This process is not only complex and time-consuming, but may also damage other intact components, increasing maintenance costs. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a symmetrical half-bridge patch high-frequency transformer.

[0005] This utility model is achieved using the following technical solution: a symmetrical half-bridge patch high-frequency transformer, including a frame, with limiting plates fixedly connected to the top and rear ends of the frame, magnetic cores inserted into the top and bottom of the frame, a plurality of placement slots opened from left to right at the front and rear ends of the frame, pins fixedly connected to the bottom of the frame, first limiting slots opened on the left and right sides of the inner wall of the placement slots, second limiting slots opened on the right side of the front and rear ends of the frame, a rotating mechanism provided at the front and rear ends of the frame, and L-shaped winding rods fixedly connected to the bottom front and rear ends of the frame.

[0006] The above technical solution fixes the magnetic core at the front and rear ends of the top of the skeleton, limiting the insertion and preventing the magnetic core from rotating or shifting during high-frequency vibration, thus ensuring the stability of the closed magnetic circuit.

[0007] As a further improvement to the above solution, two limiting plates are provided, with the bottom of the magnetic core located between the two limiting plates.

[0008] As a further improvement to the above solution, the first limiting groove is located on the left and right sides of the inner wall of the left placement groove, the pin is located on the front end side of the L-shaped winding rod, and the L-shaped winding rod is located at the rear end of the bottom of the placement groove.

[0009] As a further improvement to the above solution, the rotating mechanism includes a rotating rod, one end of which is fixedly connected to a connecting plate, one end of which is fixedly connected to a pressure block, and first limiting protrusions are fixedly connected to the left and right sides of the surface of the rotating rod, and a second limiting protrusion is fixedly connected to the right side of one end of the connecting plate.

[0010] Through the above technical solution, the pressure block presses the coil in the slot tightly under the action of the rotating rod, preventing the coil from becoming loose or shifting.

[0011] As a further improvement to the above solution, the rotating rod is located in the inner wall of the left placement slot, the rear end of the rotating rod is rotatably connected to the inside of the frame, and the rear end of the connecting plate is attached to the front end of the frame.

[0012] As a further improvement to the above solution, the pressure block is located inside the placement groove, and the surface of the first limiting protrusion is inserted into the inner wall of the first limiting groove.

[0013] As a further improvement to the above solution, the surface of the second limiting protrusion is inserted into the inner wall of the second limiting groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a pressure block to rotate a rotating rod, which in turn rotates the connecting plate and the pressure block. This causes the first limiting protrusion to be inserted into the first limiting groove and the second limiting protrusion to be inserted into the second limiting groove. By pressing the coil with the pressure block, the coil is fixed and limited within the placement groove, effectively restricting the displacement of the coil within the placement groove. This prevents the coil from vibrating and loosening during high-frequency operation and ensures stable magnetic coupling.

[0015] This invention, by setting an L-shaped winding rod, eliminates the need to disassemble the entire winding coil when it detaches from the pin. Instead, the corresponding coil can be removed from the L-shaped winding rod and re-soldered, greatly simplifying the maintenance process and reducing maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the magnetic core structure of this utility model; Figure 3 This is a schematic diagram of the placement groove structure of this utility model; Figure 4 This is a schematic diagram of the L-shaped winding rod structure of this utility model; Figure 5This is a schematic diagram of the rotating mechanism of this utility model.

[0017] Explanation of key symbols: 1. Frame; 2. Limiting plate; 3. Magnetic core; 4. Placement slot; 5. Pin; 6. First limiting slot; 7. Second limiting slot; 8. Rotation mechanism; 81. Rotating rod; 82. Connecting plate; 83. Pressure block; 84. First limiting protrusion; 85. Second limiting protrusion; 9. L-shaped winding rod. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] Example: Please combine Figure 1-5 This embodiment of a symmetrical half-bridge patch high-frequency transformer includes a frame 1. A limiting plate 2 is fixedly connected to the top and rear ends of the frame 1. A magnetic core 3 is inserted into the top and bottom of the frame 1. Several placement slots 4 are opened from left to right at the front and rear ends of the frame 1. A pin 5 is fixedly connected to the bottom of the frame 1. A first limiting slot 6 is opened on the left and right sides of the inner wall of the placement slot 4. A second limiting slot 7 is opened on the right side of the front and rear ends of the frame 1. A rotating mechanism 8 is provided at the front and rear ends of the frame 1. An L-shaped winding rod 9 is fixedly connected to the bottom front and rear ends of the frame 1 to accurately wind the coil in the preset placement slot 4 of the frame 1. A rotating rod 81 that can rotate flexibly up and down is installed in the placement slot 4 on the left side of the front end of the frame 1. During the winding process, the coil first smoothly passes through the placement slot 4, then is wound several turns in an orderly manner on the L-shaped winding rod at the bottom of the frame 1. Finally, the end of the coil is accurately connected to the pin 5 at the bottom of the frame 1, completing the closed loop of the winding path. Next, two magnetic cores 3 are respectively inserted into the top and bottom of the frame 1. The bottom of the top magnetic core 3 is precisely engaged between the two limiting plates 2 at the front and rear ends of the top of the frame 1. Through the blocking effect of the limiting plates 2, the rotational displacement of the magnetic core 3 is effectively limited during operation, ensuring the closing accuracy and stability of the magnetic circuit. Finally, the wound coil is precisely electric welded to the pin 5 at the bottom of the frame 1. After welding, the upper and lower magnetic cores 3 are tightly wrapped and fixed with insulating tape.

[0020] In later maintenance scenarios, if a coil detaches from pin 5, it is not necessary to disassemble the already wound coil on the frame 1. Simply remove the detached coil portion from the L-shaped winding rod 9 and re-solder it for repair. This design significantly simplifies the maintenance process, reduces the difficulty and workload of maintenance operations, and avoids damage to other intact components during disassembly, effectively saving maintenance time and costs, and improving maintenance efficiency and convenience.

[0021] There are two limiting plates 2, and the bottom of the magnetic core 3 is located between the two limiting plates 2.

[0022] The first limiting groove 6 is located on the left and right sides of the inner wall of the left placement groove 4, the pin 5 is located on the front side of the L-shaped winding rod 9, and the L-shaped winding rod 9 is located at the rear end of the bottom of the placement groove 4.

[0023] The rotating mechanism 8 includes a rotating rod 81, with a connecting plate 82 fixedly connected to one end of the rotating rod 81 and a pressure block 83 fixedly connected to one end of the connecting plate 82. First limiting protrusions 84 are fixedly connected to the left and right sides of the rotating rod 81, and a second limiting protrusion 85 is fixedly connected to the right side of one end of the connecting plate 82. Manually rotating the rotating rod 81 causes the connecting plate 82 and pressure block 83 to rotate synchronously. During this process, the first limiting protrusion 84 on the surface of the rotating rod 81 precisely inserts into the first limiting groove 6 on the inner wall of the placement groove 4, while the second limiting protrusion 85 on one side of the connecting plate 82 is embedded into the second limiting groove 7 on the frame 1, achieving precise positioning through a double limiting structure. Simultaneously, the pressure block 83 tightly presses the coil within the placement groove 4, effectively limiting the lateral and longitudinal displacement of the coil within the placement groove 4. This prevents the coil from loosening or shifting due to vibration during high-frequency operation of the transformer, thereby ensuring stable magnetic coupling between the magnetic core 3 and the coil, reducing energy loss during transmission, and guaranteeing reliable transformer performance.

[0024] The rotating rod 81 is located in the inner wall of the left placement slot 4. The rear end of the rotating rod 81 is rotatably connected to the inside of the frame 1, and the rear end of the connecting plate 82 is attached to the front end of the frame 1.

[0025] The pressure block 83 is located inside the placement groove 4, and the surface of the first limiting protrusion 84 is inserted into the inner wall of the first limiting groove 6.

[0026] The surface of the second limiting protrusion 85 is inserted into the inner wall of the second limiting groove 7.

[0027] The implementation principle of a symmetrical half-bridge patch high-frequency transformer in this application embodiment is as follows: First, the coil is precisely wound in the preset placement slot 4 of the bobbin 1. A rotating rod 81 that can flexibly rotate up and down is installed in the placement slot 4 on the left side of the front end of the bobbin 1. During the winding process, the coil first passes smoothly through the placement slot 4, and then is wound several turns in an orderly manner on the L-shaped winding rod at the bottom of the bobbin 1. Finally, the end of the coil is accurately connected to the pin 5 at the bottom of the bobbin 1 to complete the closed loop of the winding path.

[0028] Subsequently, the rotating rod 81 is manually rotated, causing the connecting plate 82 and the pressure block 83, which are fixedly connected to it, to rotate synchronously. During this process, the first limiting protrusion 84 on the surface of the rotating rod 81 will precisely insert into the first limiting groove 6 on the inner wall of the placement groove 4, and the second limiting protrusion 85 on one side of the connecting plate 82 will be embedded into the second limiting groove 7 on the frame 1, achieving precise positioning through a double limiting structure. At the same time, the pressure block 83 will tightly press the coil in the placement groove 4, effectively limiting the lateral and longitudinal displacement of the coil in the placement groove 4, preventing the coil from loosening or shifting due to vibration under high-frequency operation of the transformer, thereby ensuring the stable magnetic coupling effect between the magnetic core 3 and the coil, reducing energy loss during energy transmission, and ensuring the reliable operation of the transformer.

[0029] Next, the two magnetic cores 3 are inserted into the top and bottom of the frame 1 respectively. The bottom of the top magnetic core 3 fits precisely between the two limiting plates 2 at the front and rear ends of the top of the frame 1. The limiting plates 2 effectively restrict the rotation and displacement of the magnetic core 3 during operation, ensuring the closing accuracy and stability of the magnetic circuit. Finally, the wound coil is precisely soldered to the pin 5 at the bottom of the frame 1. After soldering, the two magnetic cores 3 are tightly wrapped and fixed with insulating tape.

[0030] In later maintenance scenarios, if a coil detaches from pin 5, it is not necessary to disassemble the already wound coil on the frame 1. Simply remove the detached coil portion from the L-shaped winding rod 9 and re-solder it for repair. This design significantly simplifies the maintenance process, reduces the difficulty and workload of maintenance operations, and avoids damage to other intact components during disassembly, effectively saving maintenance time and costs, and improving maintenance efficiency and convenience.

[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A symmetrical half-bridge patch high-frequency transformer, characterized in that, The frame includes a skeleton (1), with a limiting plate (2) fixedly connected to the top front and rear ends of the skeleton (1), a magnetic core (3) inserted into the top and bottom of the skeleton (1), a number of placement slots (4) opened from left to right at the front and rear ends of the skeleton (1), a pin (5) fixedly connected to the bottom of the skeleton (1), a first limiting slot (6) opened on the left and right sides of the inner wall of the placement slot (4), a second limiting slot (7) opened on the right side of the front and rear ends of the skeleton (1), a rotating mechanism (8) provided at the front and rear ends of the skeleton (1), and an L-shaped winding rod (9) fixedly connected to the bottom front and rear ends of the skeleton (1).

2. The symmetrical half-bridge patch high-frequency transformer as described in claim 1, characterized in that: There are two limiting plates (2), and the bottom of the magnetic core (3) is located between the two limiting plates (2).

3. The symmetrical half-bridge surface-mount high-frequency transformer as described in claim 1, characterized in that: The first limiting groove (6) is located on the left and right sides of the inner wall of the left placement groove (4), the pin (5) is located on the front end side of the L-shaped winding rod (9), and the L-shaped winding rod (9) is located at the rear end of the bottom of the placement groove (4).

4. The symmetrical half-bridge patch high-frequency transformer as described in claim 1, characterized in that: The rotating mechanism (8) includes a rotating rod (81), one end of which is fixedly connected to a connecting plate (82), one end of which is fixedly connected to a pressure block (83), the left and right sides of the surface of the rotating rod (81) are fixedly connected to a first limiting protrusion (84), and the right side of one end of the connecting plate (82) is fixedly connected to a second limiting protrusion (85).

5. A symmetrical half-bridge patch high-frequency transformer as described in claim 4, characterized in that: The rotating rod (81) is located in the inner wall of the left placement groove (4). The rear end of the rotating rod (81) is rotatably connected to the inside of the frame (1), and the rear end of the connecting plate (82) is attached to the front end of the frame (1).

6. A symmetrical half-bridge surface-mount high-frequency transformer as described in claim 4, characterized in that: The pressure block (83) is located inside the placement groove (4), and the surface of the first limiting protrusion (84) is inserted into the inner wall of the first limiting groove (6).

7. A symmetrical half-bridge surface-mount high-frequency transformer as described in claim 4, characterized in that: The surface of the second limiting protrusion (85) is inserted into the inner wall of the second limiting groove (7).

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