Triangular common mode inductor

Abstract

The utility model discloses a kind of triangle common mode inductance, it is related to common mode inductance technical field, including triangle magnetic core, PCB board and several coils, the upper portion, lower portion of triangle magnetic core is symmetrically provided with inclined surface portion, both ends of each inclined surface portion are provided with chamfered portion, coil is contacted after winding with each chamfered portion, and coil and the upper surface, lower surface, side and inclined surface portion of triangle magnetic core will form different gap size between each other.This patent's common mode inductance highlight, in the middle of triangle, that is, between three coils is provided with insulating sheet, so that arc produced by coil after energization is just blocked by insulating sheet, magnetic core is set into microcrystalline material, so that the function realized is also relatively large, insulating sheet medium increases insulation strength, can ensure that winding and winding between each other have no arc phenomenon in the case of greater current voltage, ensure the safety of electrical appliance use, satisfy more big function electrical appliance demand.

Description

Technical Field

[0001] This utility model relates to the field of common mode inductor technology, specifically a triangular common mode inductor. Background Technology

[0002] In the electronics industry, common-mode inductors are important passive components widely used in filtering, electromagnetic interference suppression, and other fields. Traditional common-mode inductor designs typically employ rectangular or circular triangular magnetic cores, maintaining a tight fit between the coil and the triangular core to achieve optimal electromagnetic performance.

[0003] Currently, in the existing technology, patent publication number CN117711758A discloses a delta common-mode inductor. Since the power of the common-mode inductor is relatively large, there will be a high voltage current after the coil is energized, which will cause arcing. For the current delta inductor, there is no insulating medium between the three windings of the three-phase common-mode inductor. Relying solely on the copper wire as the insulating medium cannot achieve a standard safety distance, thus the effect is problematic. Therefore, we need to solve the defects of the existing technology. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a triangular common-mode inductor, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a triangular common-mode inductor, comprising a triangular magnetic core, a PCB board, and a plurality of coils, wherein the PCB board is located below the triangular magnetic core, and the coils are wound around the outside of each side of the triangular magnetic core, characterized in that an insulating sheet is provided between the plurality of coils, and the insulating sheet is located in the middle of the magnetic core.

[0006] Furthermore, each interior angle of the triangular magnetic core is 60°.

[0007] Furthermore, the PCB board has an outer ring and an inner ring on its surface, and several reserved holes are opened inside the PCB board along the trajectory of the outer and inner rings.

[0008] Furthermore, each coil has two pins, one of which is inserted into a pre-drilled hole on the outer coil, and the other pin is inserted into a pre-drilled hole on the inner coil.

[0009] Furthermore, after the two pins are inserted into the corresponding reserved holes, they continue to extend downwards until they protrude from the lower surface of the PCB board.

[0010] Furthermore, the vertical cross-section of the triangular magnetic core has an octagonal structure.

[0011] Furthermore, the upper and lower parts of the triangular magnetic core are symmetrically provided with beveled sections, and each beveled section has chamfered ends. After the coil is wound, it will come into contact with each chamfered section, and gaps of different sizes will be formed between the coil and the upper and lower surfaces, sides and beveled sections of the triangular magnetic core.

[0012] Furthermore, the insulating sheet is triangular in shape, and the insulating sheet is used to isolate several coils.

[0013] Furthermore, the insulating sheet is made of either plastic or ceramic.

[0014] Furthermore, the triangular magnetic core has a quadrilateral shape and is made of microcrystalline or alloy materials.

[0015] This invention provides a triangular common-mode inductor. Compared with the prior art, it has the following advantages: The common-mode inductor of this patent features an insulating sheet placed in the middle of the triangle, between the three coils. This insulating sheet isolates the coils, preventing arcing when the coils are energized, thus maximizing the product's performance. Furthermore, the triangular shape of the insulating sheet makes it easy to insert and secure it between the coils. The magnetic core is made of microcrystalline material, allowing for greater functionality. The insulating sheet's dielectric material increases insulation strength, ensuring no arcing between the windings even under higher current and voltage conditions, guaranteeing electrical safety and meeting the needs of more high-performance electrical appliances. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a front view of the present invention; Figure 4 This is a three-dimensional structural diagram of the triangular magnetic core in this utility model; Figure 5 This is a top view of the triangular magnetic core in this utility model; Figure 6 This is a front view of the triangular magnetic core in this utility model; Figure 7 This is a half-sectional view of the triangular magnetic core in this utility model; Figure 8 This is a top view of the PCB board in this utility model.

[0017] Figure 9 This is a schematic diagram of the quadrilateral magnetic core in this utility model.

[0018] Figure 10 This is a schematic diagram of the insulating sheet in this utility model; Figure 11 This is a three-dimensional view of the quadrilateral magnetic core in this utility model.

[0019] In the diagram: 1. Triangular magnetic core; 11. Beveled section; 111. Chamfered section; 12. Inner angle; 2. PCB board; 21. Outer ring; 22. Inner ring; 23. Reserved hole; 3. Coil; 31. Pin; 4. Gap; 5. Insulating sheet; Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-8 This utility model provides a technical solution: a triangular common-mode inductor, including a triangular magnetic core 1, a PCB board 2, and three coils 3. Each interior angle 12 of the triangular magnetic core 1 is 60°. The PCB board 2 is located below the triangular magnetic core 1. The three coils 3 are wound around the outside of the three sides of the triangular magnetic core 1. The upper and lower parts of the triangular magnetic core 1 are symmetrically provided with beveled parts 11 (four beveled parts 11, plus the upper surface, lower surface, and two side surfaces of the triangular magnetic core 1, so that the vertical cross section of the triangular magnetic core 1 is octagonal). Each beveled part 11 has chamfered parts 111 at both ends. After the coils 3 are wound, they will contact each chamfered part 111. The coils 3 and the upper and lower surfaces, side surfaces, and beveled parts 11 of the triangular magnetic core 1 will form gaps 4 of different sizes. These gaps 4 are used for air circulation, thereby achieving the purpose of heat dissipation. Compared with the structure in the prior art where the triangular magnetic core 1 and the coils 2 are completely attached, the heat dissipation performance of this triangular common-mode inductor can be further improved. In addition, the surface of the PCB board 2 is provided with an outer ring 21 and an inner ring 22. Inside the PCB board 2, three reserved holes 23 are opened along the trajectory of the outer ring 21 and the inner ring 22, for a total of six reserved holes 23. Correspondingly, each coil 3 has two pins 31, for a total of six pins 31. Three pins 31 are inserted into the three reserved holes 23 of the outer ring 21, and the other three pins 31 are inserted into the three reserved holes 23 of the inner ring 22. After insertion, the bottom end of each pin 31 continues to extend downward until it protrudes from the lower surface of the PCB board 2, thereby facilitating subsequent soldering and fixing.

[0022] The insulating sheet 5 is triangular in shape and is used to isolate several coils 3. The insulating sheet 5 is made of either plastic or ceramic to prevent electric arcs from spreading. The triangular magnetic core 1 is quadrilateral in shape because quadrilateral shapes have higher production efficiency and allow for larger gaps between the core and coils. The magnetic core is made of microcrystalline material to meet the needs of more high-current electronic products.

Claims

1. A triangular common-mode inductor, comprising a triangular magnetic core (1), a PCB board (2), and a plurality of coils (3), wherein the PCB board (2) is located below the triangular magnetic core (1), and the coils (3) are wound around the outside of each side of the triangular magnetic core (1), characterized in that, An insulating sheet (5) is provided between the plurality of coils (3), and the insulating sheet (5) is provided with the middle part of the magnetic core.

2. The triangular common-mode inductor according to claim 1, characterized in that, Each interior angle (12) of the triangular magnetic core (1) is 60°.

3. A triangular common-mode inductor according to claim 1, characterized in that, The surface of the PCB board (2) is provided with an outer ring (21) and an inner ring (22). Several reserved holes (23) are opened inside the PCB board (2) along the trajectory of the outer ring (21) and the inner ring (22).

4. A triangular common-mode inductor according to claim 1, characterized in that, Each coil (3) has two pins (31), one pin (31) is inserted into the reserved hole (23) on the outer ring (21), and the other pin (31) is inserted into the reserved hole (23) on the inner ring (22).

5. A triangular common-mode inductor according to claim 4, characterized in that, After the two pins (31) are inserted into the corresponding reserved holes (23), they continue to extend downward until they protrude from the lower surface of the PCB board (2).

6. A triangular common-mode inductor according to claim 1, characterized in that, The vertical cross-section of the triangular magnetic core (1) is octagonal.

7. A triangular common-mode inductor according to claim 1, characterized in that, The upper and lower parts of the triangular magnetic core (1) are symmetrically provided with beveled parts (11), and each beveled part (111) has chamfered parts (111) at both ends. After the coil (3) is wound, it will come into contact with each chamfered part (111), and gaps (4) of different sizes will be formed between the coil (3) and the upper and lower surfaces, sides and beveled parts (11) of the triangular magnetic core (1).

8. A triangular common-mode inductor according to claim 1, characterized in that, The insulating sheet (5) is triangular in shape, and the insulating sheet (5) is used to isolate several coils (3).

9. A triangular common-mode inductor according to claim 1, characterized in that, The insulating sheet (5) is made of either plastic or ceramic.

10. A triangular common-mode inductor according to claim 1, characterized in that, The triangular magnetic core (1) is quadrilateral in shape and is made of microcrystalline material.

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