A transformer skeleton

Abstract

The utility model relates to transformer technical field discloses a kind of transformer framework, including the framework main body installed in transformer interior, the framework main body both sides are equipped with several needle foot seat, and wire groove is equipped between adjacent needle foot seat;Wherein right side needle foot seat is fixed with first needle foot, wherein left side needle foot seat is fixed with second needle foot;Framework main body top is fixed with first baffle and second baffle respectively, first protruding block, second protruding block, groove and third protruding block for prolonging creeping path to increase creeping distance are set in the side of framework main body, in the process of transformer operation, it can prevent the phenomenon of surface discharge along due to the too short creeping distance between different potential components in high voltage or humid and other harsh environments, leading to insulation failure, effectively improve the insulation performance and safety of transformer, without increasing the length of framework main body, improve insulation performance in limited space, beneficial to the miniaturization of transformer.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically a transformer frame. Background Technology

[0002] The transformer bobbin, also known as the transformer wire frame, is a major structural component of a transformer. Its main functions include: providing winding space for the copper wires; securing the transformer core; providing a path for the wires during winding in the bobbin; the metal pins in the bobbin acting as supports for the copper wire winding, connecting to the PCB board after soldering, and providing conductivity during transformer operation; and the protrusions, recesses, or chamfers in the bobbin determining the transformer's placement orientation or pin sequence during use.

[0003] Transformers are used in PCB power supplies to perform voltage, current, and impedance transformations on the PCB. Therefore, they have high requirements for electrical safety. If the creepage distance between the transformer windings and pins is too short, it can easily lead to a short circuit, thereby damaging the entire PCB. Existing technology increases the creepage distance between the transformer windings and pins by increasing the length of the frame. However, this method increases the volume of the transformer frame, increases material costs, and is not conducive to reducing the overall size of the transformer or the PCB layout space. Therefore, a new transformer frame is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a transformer frame to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a transformer frame, comprising a frame body installed inside the transformer, wherein a plurality of pin seats are provided on both sides of the frame body, and a wire groove is provided between adjacent pin seats; The right-side pin holder is fixed with a first pin, and the left-side pin holder is fixed with a second pin. The top of the main frame is respectively fixed with a first baffle and a second baffle, and a winding drum is fixed between the first baffle and the second baffle. A first protrusion is fixed to the bottom left side of the main frame, a second protrusion is fixed to the bottom right side of the main frame, and a third protrusion is fixed to the top of the main frame away from the first protrusion. A groove is provided on the right side of the third protrusion.

[0006] Preferably, as described above, a wire winding is wound around the outside of the winding drum, and an insulating tape is provided on the outside of the wire winding.

[0007] Preferably, the wire winding is connected to the first pin and the second pin respectively via wires, and the wire groove is used to guide the wire routing.

[0008] Preferably, as described above, a magnetic core is sleeved on the outer side of the first baffle and the second baffle, and the magnetic core is located outside the winding drum and the conductor winding.

[0009] Preferably, the second and third protrusions are located on both sides of the conductor winding, as described above.

[0010] Preferably, the groove is located at the top of the first pin.

[0011] Preferably, the first protrusion, the second protrusion, the groove, and the third protrusion are used to extend the creepage path and thus increase the creepage distance.

[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects: The first protrusion, second protrusion, groove, and third protrusion on one side of the frame body are used to extend the creepage path and increase the creepage distance. During the operation of the transformer, it can prevent surface discharge between components at different potentials from occurring due to insufficient creepage distance in harsh environments such as high voltage or humidity, which could lead to insulation failure. This effectively improves the insulation performance and safety of the transformer. It does not require increasing the length of the frame body, but improves insulation performance in a limited space, which is conducive to the miniaturization of the transformer. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the left-side structure of this utility model; Figure 4 This is a schematic diagram of the magnetic core structure of this utility model.

[0015] Explanation of reference numerals in the attached drawings: 1. Main frame; 2. First baffle; 3. Winding spool; 4. First pin; 5. Second baffle; 6. Second pin; 7. First protrusion; 8. Second protrusion; 9. Groove; 10. Third protrusion; 11. Wire groove; 12. Pin seat; 13. Magnetic core; 14. Wire winding. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0018] Example Please see Figure 1-4 This utility model provides a technical solution: a transformer frame, including a frame body 1 installed inside the transformer. In this embodiment, the frame body 1 is applied to a voltage input power module. The frame body 1 has several pin seats 12 on both sides, and wire grooves 11 are provided between adjacent pin seats 12. The right pin seat 12 is fixed with a first pin 4, and the left pin seat 12 is fixed with a second pin 6. The frame body 1 serves as the core support structure, and the pin seats 12 on both sides are respectively fixed with the first pin 4 and the second pin 6 to realize electrical connection with the external circuit. The wire grooves 11 between adjacent pin seats 12 are used to standardize the wire routing path and avoid wire crossing interference. A first baffle 2 and a second baffle 5 are fixed to the top of the main frame 1, and a winding drum 3 is fixed between the first baffle 2 and the second baffle 5. A wire winding 14 is wound around the outside of the winding drum 3, and insulating tape is applied to the outside of the wire winding 14. The wire winding 14 is connected to the first pin 4 and the second pin 6 via wires. A wire groove 11 guides the wire routing. A magnetic core 13 is sleeved on the outside of the first baffle 2 and the second baffle 5. The magnetic core 13 is located outside the winding drum 3 and the wire winding 14, and is connected to the top of the main frame 1 by adhesive or clips. The winding drum 3 is fixed between the first baffle 2 and the second baffle 5, and the wire winding 14 is wound around its outside, connecting to the first pin 4 and the second pin 6 via wires. The magnetic core 13 sleeved on the outside of the baffles forms a closed magnetic circuit, realizing electromagnetic energy conversion. The insulating tape wraps around the wire winding 14 to prevent short circuits and enhance insulation performance.

[0019] A first protrusion 7 is fixed to the bottom left side of the main frame 1, a second protrusion 8 is fixed to the bottom right side of the main frame 1, and a third protrusion 10 is fixed to the top of the main frame 1 away from the first protrusion 7. A groove 9 is opened on the right side of the third protrusion 10. The groove 9 is square in shape and has a side length of 1.1 mm. The second protrusion 8 and the third protrusion 10 are located on both sides of the wire winding 14, respectively. The first protrusion 7 on the left and the second protrusion 8 on the right are located on both sides of the bottom of the frame, forming a physical isolation barrier.

[0020] The groove 9 is located on the top of the first pin 4. The groove 9 is opened on the right side of the third protrusion 10 at the top, and the groove 9 is located on the top of the first pin 4, forming a discontinuous path. The first protrusion 7, the second protrusion 8, the groove 9 and the third protrusion 10 are used to extend the creepage path and thus increase the creepage distance. The first protrusion 7, the second protrusion 8, the groove 9 and the third protrusion 10 increase the creepage path between the wire winding 14 and the first pin 4 and the second pin 6, thereby increasing the creepage distance, and there is no need to increase the length of the skeleton body 1. The path is forced to go around the second protrusion 8 or the first protrusion 7, or go up into the groove 9 and then over the third protrusion 10. It is equivalent to turning a straight line into a zigzag or U-shaped path around obstacles on a two-dimensional plane, so the creepage distance is greatly extended.

[0021] Structural principle: A winding drum 3 is fixed between the first baffle 2 and the second baffle 5. The winding drum 3 serves as the winding carrier for the conductor winding 14, providing space for the transformer coil winding. The conductor winding 14 is wound around the outside of the winding drum 3, and insulating tape is provided on the outside of the conductor winding 14. The insulating tape serves as insulation, preventing leakage between the conductor winding 14 and other components, and ensuring the electrical safety performance of the transformer. The wire groove 11 can regulate the layout of the wires, make the wires neat and orderly, avoid the wires from tangling and interfering with each other, and also facilitate installation and maintenance, ensuring that the current can be stably transmitted from the wire winding 14 to the first pin 4 and the second pin 6 respectively, so as to exchange energy with the external circuit. The function of the magnetic core 13 is to enhance magnetic field coupling and improve the electromagnetic induction efficiency of the transformer. When an alternating current passes through the conductor winding 14, an alternating magnetic field is generated. The magnetic core 13 can concentrate most of the magnetic field inside itself, reducing magnetic field leakage, thereby achieving efficient power conversion.

[0022] The first protrusion 7, the second protrusion 8, the groove 9, and the third protrusion 10 are used to extend the creepage path, thereby increasing the creepage distance. During transformer operation, voltage differences may exist between components at different potentials. If the creepage distance is too short, surface discharge may occur in harsh environments such as high voltage or humidity, leading to insulation failure and affecting the safe operation of the transformer. By setting these protrusions and grooves 9, the creepage distance between the conductor winding 14 and the first pin 4 and the second pin 6 is increased, effectively preventing surface discharge, improving the insulation performance and safety of the transformer, without increasing the length of the frame body 1, achieving improved insulation performance within a limited space, and contributing to the miniaturization of the transformer.

[0023] In summary, the first protrusion 7, the second protrusion 8, the groove 9, and the third protrusion 10 provided on one side of the frame body 1 are used to extend the creepage path and increase the creepage distance. During the operation of the transformer, it can prevent surface discharge between components at different potentials from occurring due to excessively short creepage distance in harsh environments such as high voltage or humidity, which could lead to insulation failure. This effectively improves the insulation performance and safety of the transformer. It does not require increasing the length of the frame body 1, and improves insulation performance within a limited space, which is conducive to the miniaturization of the transformer.

[0024] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A transformer core comprising a core body (1) to be installed in the interior of a transformer, characterized in that, The main body of the skeleton (1) has several pin seats (12) on both sides, and wire grooves (11) are provided between adjacent pin seats (12). The right-side pin seat (12) is fixed with a first pin (4), and the left-side pin seat (12) is fixed with a second pin (6). The top of the main body of the skeleton (1) is respectively fixed with a first baffle (2) and a second baffle (5), and a winding drum (3) is fixed between the first baffle (2) and the second baffle (5). The bottom left side of the skeleton body (1) is fixed with a first protrusion (7), the bottom right side of the skeleton body (1) is fixed with a second protrusion (8), the top side of the skeleton body (1) away from the first protrusion (7) is fixed with a third protrusion (10), and the right side of the third protrusion (10) is provided with a groove (9).

2. A transformer skeleton according to claim 1, characterized in that The outer side of the winding drum (3) is wound with a wire winding (14), and the outer side of the wire winding (14) is provided with insulating tape.

3. A transformer skeleton according to claim 2, characterised in that The wire winding (14) is connected to the first pin (4) and the second pin (6) respectively by wires, and the wire groove (11) is used to guide the wire routing.

4. A transformer skeleton according to claim 1, characterized in that A magnetic core (13) is sleeved on the outside of the first baffle (2) and the second baffle (5). The magnetic core (13) is located outside the winding drum (3) and the conductor winding (14).

5. A transformer skeleton according to claim 2, characterized in that The second protrusion (8) and the third protrusion (10) are located on both sides of the conductor winding (14).

6. A transformer skeleton according to claim 1, characterized in that The groove (9) is located on top of the first pin (4).

7. A transformer skeleton according to claim 1, characterized in that The first protrusion (7), the second protrusion (8), the groove (9) and the third protrusion (10) are used to extend the creepage path and thus increase the creepage distance.

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