Large-current common-mode inductor in splayed pin outlet mode

Abstract

The utility model discloses a heavy current common mode choke of splayed pin mode, including magnet ring, first coil, second coil and bottom plate, first pin and second pin are respectively provided on the two sides of first coil, third pin and fourth pin are respectively provided on the two sides of second coil, and the bottom plate is provided with the first pin and the second pin. The bottom plate is provided with a first plug hole matched with the first pin, a second plug hole matched with the second pin, a third plug hole matched with the third pin, a fourth plug hole matched with the fourth pin, a third plug hole matched with the first pin, a third plug hole matched with the second pin, a fourth plug hole matched with the third pin and a fourth plug hole matched with the fourth pin. The first plug-in hole and the second plug-in hole incline upwards by 13 degrees along the center of the bottom plate, and the third plug-in hole and the fourth plug-in hole incline upwards by 13 degrees along the center of the bottom plate, so that a splayed pin outlet mode is formed, the space is saved, the installation and welding difficulty is reduced, and the situation that the heat dissipation performance of the inductor is possibly affected due to the fact that the distance between pins is small is avoided.

Description

Technical Field

[0001] This utility model relates to the field of high-current common-mode inductor technology, specifically a high-current common-mode inductor with a figure-eight pin configuration. Background Technology

[0002] Common-mode inductors, also known as common-mode chokes, are commonly used in computer switching power supplies to filter common-mode electromagnetic interference signals. In circuit board design, common-mode inductors also serve as EMI filters, suppressing the outward radiation of electromagnetic waves generated by high-speed signal lines.

[0003] Traditional common-mode inductors use a straight-out lead configuration and an enameled flat wire structure. Due to this structure, the small spacing between the inner leads may increase the risk of electromagnetic interference and result in low automation efficiency. To address this issue, we have developed a new structure: a high-current common-mode inductor with a figure-eight lead configuration. Utility Model Content

[0004] The purpose of this invention is to provide a high-current common-mode inductor with a figure-eight pin configuration to solve the aforementioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-current common-mode inductor with a figure-eight pin configuration, comprising a magnetic ring, a first coil, a second coil, and a base plate. The first coil has a first pin and a second pin on both sides, and the second coil has a third pin and a fourth pin on both sides. The base plate has a first insertion hole that mates with the first pin, a second insertion hole that mates with the second pin, a third insertion hole that mates with the third pin, and a fourth insertion hole that mates with the fourth pin. The first and second insertion holes are inclined upwards at 13° along the center of the base plate, and the third and fourth insertion holes are also inclined upwards at 13° along the center of the base plate.

[0006] Preferably, the first coil and the second coil are symmetrically wound on the magnetic ring, and the distance between the centers of the second and fourth insertion holes is 18 cm.

[0007] Preferably, the base plate has protrusions attached to both sides for supporting the magnetic ring.

[0008] Preferably, the two sides of the base plate are arc-shaped.

[0009] Preferably, the base plate is further provided with heat dissipation holes, which are evenly distributed on the surface of the base plate.

[0010] Preferably, the first, second, third, and fourth pins are all made of tin-plated copper to improve conductivity and corrosion resistance.

[0011] Preferably, the magnetic ring is a nanocrystalline magnetic ring with higher saturation magnetic induction intensity.

[0012] Preferably, both the first coil and the second coil are flat wire coils.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] The pin positions are adjusted by fully utilizing the shape of the magnetic ring on the first and second coils, so that the first pin is inserted into the first socket, the second pin into the second socket, the third pin into the third socket, and the fourth pin into the fourth socket. The first and second sockets are tilted upwards at 13° from the center of the base plate, thus forming an eight-shaped pinout. This saves space, reduces installation and soldering difficulty, avoids the possibility that small pin spacing may affect the heat dissipation performance of the inductor, and facilitates assembly and soldering. The highly automated flat coil winding structure makes full use of the customer's limited package space, resulting in a small product package, high current, and high power, effectively improving the product's power consumption. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional view of a high-current common-mode inductor with a figure-eight pin configuration according to this embodiment;

[0017] Figure 2 This is a side view of a high-current common-mode inductor with a figure-eight pin configuration according to this embodiment;

[0018] Figure 3 This is a front view of a high-current common-mode inductor with a figure-eight pin configuration according to this embodiment;

[0019] Figure 4 This is a schematic diagram of the base plate of a high-current common-mode inductor with an eight-shaped lead configuration in this embodiment.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Magnetic ring; 2. First coil; 3. Second coil; 4. Base plate; 5. First pin; 6. Second pin; 7. Third pin; 8. Fourth pin; 9. First socket; 10. Second socket; 11. Third socket; 12. Fourth socket; 13. Boss; 14. Heat dissipation hole. Detailed Implementation

[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a high-current common-mode inductor with a figure-eight pin configuration, comprising a magnetic ring 1, a first coil 2, a second coil 3, and a base plate 4. The first coil 2 has a first pin 5 and a second pin 6 on both sides, and the second coil 3 has a third pin 7 and a fourth pin 8 on both sides. The base plate 4 has a first insertion hole 9 that mates with the first pin 5, a second insertion hole 10 that mates with the second pin 6, a third insertion hole 11 that mates with the third pin 7, and a fourth insertion hole 12 that mates with the fourth pin 8. The first insertion hole 9 and the second insertion hole 10 are inclined upwards at a 13° angle along the center of the base plate 4.

[0024] Specifically, the first coil 2 and the second coil 3 are symmetrically wound on the magnetic ring 1. The center distance between the second insertion hole 10 and the fourth insertion hole 12 is 18cm. This arrangement allows the magnetic field generated by the first coil 2 and the second coil 3 to be more evenly distributed around the magnetic ring 1, improving the filtering effect of the common-mode inductor. The 18cm center distance between the second insertion hole 10 and the fourth insertion hole 12 also makes the inductor layout on the circuit board more reasonable, avoiding interference and further improving the stability and reliability of the circuit.

[0025] Specifically, the base plate 4 has protrusions 13 attached to both sides to support the magnetic ring 1. By setting the protrusions 13 to support the magnetic ring 1, the magnetic ring 1 can be more stably fixed on the base plate 4 during installation, avoiding problems such as poor pin connection caused by the shaking of the magnetic ring 1. At the same time, the design of the protrusions 13 can also play a certain role in heat dissipation. The protrusions 13 create a certain gap between the base plate 4 and the magnetic ring 1, which is more conducive to ventilation and heat dissipation.

[0026] Specifically, the base plate 4 has curved sides. By making the base plate 4 curved, the base plate 4 occupies less space, which can reduce interference with surrounding components when it is installed on the circuit board and improve the flexibility of component layout. The curved base plate 4 design can also increase the strength of the base plate 4, making the base plate 4 more stable when subjected to external forces and less prone to deformation.

[0027] Specifically, the base plate 4 is also provided with heat dissipation holes 14 for heat dissipation. The heat dissipation holes 14 are evenly distributed on the surface of the base plate 4. By setting the heat dissipation holes 14, the heat dissipation effect on the base plate 4 is better, which further improves the working efficiency and stability of the circuit. The design of the heat dissipation holes 14 can also reduce the weight of the base plate 4, making the entire common mode inductor easier to install.

[0028] Specifically, pins 5, 6, 7, and 8 are all made of tin-plated copper to improve conductivity and corrosion resistance. Tin-plated copper pins have good elasticity and plasticity, which can maintain a stable connection during insertion and removal, and are not prone to loosening or breakage, thus ensuring the stability and reliability of the circuit. Tin-plated copper pins also have good thermal conductivity, which can quickly transfer the heat generated by the inductor during operation to the base plate 4, further improving the heat dissipation effect of the circuit.

[0029] Specifically, the magnetic ring 1 is a nanocrystalline magnetic ring 1 with higher saturation magnetic induction intensity. Compared with the traditional ferrite magnetic ring 1, the magnetic ring 1 made of nanocrystalline material has higher saturation magnetic induction intensity and lower loss, and can maintain a stable filtering effect at higher frequencies, thus improving the working efficiency and performance of the common-mode inductor. At the same time, the nanocrystalline magnetic ring 1 has lower coercivity, meaning that the magnetic domains inside the material are more likely to rearrange when the magnetic field changes, which makes the energy loss of the magnetic ring 1 smaller when working in an alternating magnetic field.

[0030] Specifically, both the first coil 2 and the second coil 3 are flat wire coils. Flat wire coils can effectively reduce the gaps between coils, resulting in a higher fill factor and further improving the filtering effect of the common mode inductor. The design of flat wire coils can also reduce the inductance loss of the coils and improve the working efficiency of the inductor.

[0031] A specific application example of this embodiment is as follows:

[0032] During installation, first attach and install the base plate 4 and the boss 13. Then, insert the first pin 5 of the first coil 2 into the first insertion hole 9 on the base plate 4, and insert the third pin 7 of the second coil 3 into the third insertion hole 11. Next, wind the first coil 2 and the second coil 3 onto the magnetic ring 1. Insert the second pin 6 of the first coil 2 into the second insertion hole 10 on the base plate 4, and insert the fourth pin 8 of the second coil 3 into the fourth insertion hole 12 on the base plate 4. At the same time, the magnetic ring 1 is supported on the boss 13. Then, connect each pin to the base plate 4 by soldering to complete the installation and put it into use.

[0033] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that modifications may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-current common-mode inductor with a figure-eight pinout, characterized in that: The device includes a magnetic ring (1), a first coil (2), a second coil (3), and a base plate (4). The first coil (2) has a first pin (5) and a second pin (6) on both sides. The second coil (3) has a third pin (7) and a fourth pin (8) on both sides. The base plate (4) has a first insertion hole (9) that mates with the first pin (5). The base plate (4) also has a second insertion hole (10) that mates with the second pin (6). The base plate (4) also has a third insertion hole (11) that mates with the third pin (7). The base plate (4) also has a fourth insertion hole (12) that mates with the fourth pin (8). The first insertion hole (9) and the second insertion hole (10) are inclined upward at 13° along the center of the base plate (4). The third insertion hole (11) and the fourth insertion hole (12) are inclined upward at 13° along the center of the base plate (4).

2. The high-current common-mode inductor with an eight-shaped lead configuration according to claim 1, characterized in that: The first coil (2) and the second coil (3) are symmetrically wound on the magnetic ring (1), and the distance between the centers of the second insertion hole (10) and the fourth insertion hole (12) is 18cm.

3. The high-current common-mode inductor with an eight-shaped lead configuration according to claim 1, characterized in that: The base plate (4) has protrusions (13) attached to both sides to support the magnetic ring (1).

4. A high-current common-mode inductor with an eight-shaped lead configuration according to claim 1, characterized in that: The base plate (4) has arc-shaped sides.

5. A high-current common-mode inductor with an eight-shaped lead configuration according to claim 1, characterized in that: The base plate (4) is also provided with heat dissipation holes (14) for heat dissipation, and the heat dissipation holes (14) are evenly distributed on the surface of the base plate (4).

6. A high-current common-mode inductor with an eight-shaped lead configuration according to claim 1, characterized in that: The first pin (5), the second pin (6), the third pin (7) and the fourth pin (8) are all made of tin-plated copper to improve conductivity and corrosion resistance.

7. A high-current common-mode inductor with an eight-shaped lead configuration according to claim 1, characterized in that: The magnetic ring (1) is a nanocrystalline magnetic ring (1) with higher saturation magnetic induction intensity.

8. A high-current common-mode inductor with an eight-shaped lead configuration according to claim 1, characterized in that: Both the first coil (2) and the second coil (3) are flat wire coils.

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