Common mode inductor

Abstract

The utility model discloses a common mode inductor which comprises a closed magnetic core, a first winding post and a second winding post which are opposite to each other are arranged on the two sides of the closed magnetic core, and an upper yoke part and a lower yoke part which are opposite to each other are arranged at the upper end and the lower end of the closed magnetic core; the first coil is wound on the first wrapping post and penetrates through the through hole; the second coil is wound on the second wrapping post and penetrates through the through hole; the partition plate penetrates through the through hole and is positioned between the first coil and the second coil; a limiting ring is arranged on the base, a mounting groove is formed in the inner side of the limiting ring, the mounting groove is used for mounting the closed magnetic core, the limiting ring wraps the lower yoke part, and the bottom of the first coil and the bottom of the second coil abut against the top of the limiting ring. According to the embodiment provided by the utility model, the coil can be prevented from deviating or deforming.

Description

Technical Field

[0001] This utility model relates to the field of inductor technology, and in particular to a common-mode inductor. Background Technology

[0002] Currently, there is a large demand for common mode inductors in the market. When producing common mode inductors in an automated manner, they are usually assembled in parallel. However, during the assembly process, the coils of existing common mode inductors are prone to misalignment or deformation, which can lead to coil damage and result in a high defect rate, increasing production costs. Utility Model Content

[0003] The following is an overview of the subject matter described in detail herein, and this overview is not intended to limit the scope of the claims.

[0004] This invention proposes a common-mode inductor that can prevent coil misalignment or deformation.

[0005] This utility model provides a common-mode inductor, comprising: a closed magnetic core, wherein the closed magnetic core is provided with a through hole penetrating the closed magnetic core, and the closed magnetic core has opposing first winding posts and second winding posts on both sides, and opposing upper yoke and lower yoke at the upper and lower ends; a first coil wound on the first winding post and passing through the through hole; a second coil wound on the second winding post and passing through the through hole; a partition plate passing through the through hole and located between the first coil and the second coil; and a base, wherein a limiting ring is provided on the base, and a mounting groove is formed on the inner side of the limiting ring for mounting the closed magnetic core, the limiting ring wrapping around the lower yoke, and the bottom of the first coil and the bottom of the second coil respectively abutting against the top of the limiting ring.

[0006] In some embodiments, a vertical plate is fixed to one side of the base, and the partition is detachably mounted on the vertical plate. A first column, a second column, and a third column are spaced apart on the side of the vertical plate away from the partition. The upper ends of the first column, the second column, and the third column are all located above the vertical plate, and the lower ends of the first column, the second column, and the third column all extend downward to the lower end of the base. A first receiving groove is formed between the first column and the second column, and a second receiving groove is formed between the third column and the second column. The first receiving groove is used to receive the first lead at the upper end of the first coil, and the second receiving groove is used to receive the second lead at the upper end of the second coil.

[0007] In some embodiments, a first wire guide groove and a second wire guide groove are provided on the other side of the base, and a wire guide notch is provided on the side of the limiting ring away from the upright plate. The third lead at the lower end of the first coil passes through the wire guide notch and the first wire guide groove in sequence, and the fourth lead at the lower end of the second coil passes through the wire guide notch and the second wire guide groove in sequence.

[0008] In some embodiments, the height of the upper end of the second column is the same as the height of the upper yoke, the height of the upper end of the first column is greater than the height of the upper end of the first coil, and the height of the upper end of the third column is greater than the height of the upper end of the second coil.

[0009] In some embodiments, the height of the upper end of the first column and the upper end of the third column are both less than the height of the upper end of the second column.

[0010] In some embodiments, the base, the limiting ring, the upright plate, the first column, the second column, and the third column are integrally formed.

[0011] In some embodiments, the cross-section of the limiting ring is in the shape of a ring racetrack.

[0012] In some embodiments, the top of the partition is provided with a first baffle and a second baffle, the first baffle being located above the first coil and the second baffle being located above the second coil.

[0013] In some embodiments, the height of the first baffle is the same as the height of the second baffle.

[0014] In some embodiments, the bottom of the base is provided with a plurality of reinforcing ribs.

[0015] This utility model embodiment includes at least the following beneficial effects: The closed magnetic core is provided with a through hole penetrating the closed magnetic core; the closed magnetic core has a first winding post and a second winding post on both sides; the upper and lower ends of the closed magnetic core have opposing upper and lower yokes, forming a relatively stable main structure of the common-mode inductor. Then, the first coil is wound on the first winding post and passes through the through hole, and the second coil is wound on the second winding post and passes through the through hole, making the positions and shapes of the first and second coils symmetrical, further improving the stability of the common-mode inductor and simplifying production and design. Furthermore, a limiting ring is provided on the base, with a mounting groove formed on the inner side of the limiting ring, allowing the closed magnetic core to be installed in the mounting groove, and the limiting ring can wrap around it. The lower yoke, which is equivalent to a closed magnetic core, can be stably mounted on the base. The bottom of the first coil and the bottom of the second coil abut against the top of the limiting ring, so that the first and second coils can be supported and restricted from shifting when the common mode inductor is assembled in parallel. In addition, since both the first and second coils are wound on the closed magnetic core, the overall stability is further increased, which can prevent the coils from shifting or deforming, thereby reducing the defect rate of common mode inductor production and effectively reducing production costs. In addition, the partition passes through the through hole and is located between the first and second coils, which can reduce the mutual interference between the first and second coils, achieve electrical isolation, and improve the electrical safety of the common mode inductor.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0018] Figure 1 A schematic diagram of the structure of a common-mode inductor provided in an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the structure of the mounting plate and column of a common mode inductor provided for an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the structure of a common-mode inductor base provided for an embodiment of this utility model;

[0021] Figure 4 A cross-sectional schematic diagram of a limiting ring for a common-mode inductor provided for an embodiment of this utility model;

[0022] Figure 5 A schematic diagram of the structure of a first baffle and a second baffle of a common mode inductor provided in an embodiment of this utility model;

[0023] Figure 6 A schematic diagram of the reinforcing rib of a common-mode inductor provided for an embodiment of this utility model;

[0024] Figure 7 A schematic diagram of the closed magnetic core of a common-mode inductor provided for an embodiment of this utility model;

[0025] Figure 8 This is a schematic diagram of the back of the base of a common mode inductor provided in an embodiment of the present invention. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Currently, there is a large demand for common mode inductors in the market. When producing common mode inductors in an automated manner, they are usually assembled in parallel. However, during the assembly process, the coils of existing common mode inductors are prone to misalignment or deformation, which can lead to coil damage and result in a high defect rate, increasing production costs. To address the problem of common-mode inductor coils easily shifting or deforming, this invention provides a common-mode inductor comprising: a closed magnetic core, the closed magnetic core having a through hole penetrating the closed magnetic core, the closed magnetic core having opposing first and second winding posts on both sides, and opposing upper and lower yoke portions at the upper and lower ends of the closed magnetic core; a first coil wound on the first winding post and passing through the through hole; a second coil wound on the second winding post and passing through the through hole; a partition plate passing through the through hole and located between the first coil and the second coil; and a base having a limiting ring on the base, the inner side of the limiting ring forming a mounting groove for mounting the closed magnetic core, the limiting ring wrapping around the lower yoke portion, and the bottoms of the first coil and the second coil respectively abutting against the top of the limiting ring.

[0031] According to the solution provided in this embodiment of the utility model, the closed magnetic core is provided with a through hole penetrating the closed magnetic core. The closed magnetic core has a first winding post and a second winding post on both sides. The upper and lower ends of the closed magnetic core have opposing upper and lower yokes, forming a relatively stable main structure of the common-mode inductor. Then, the first coil is wound on the first winding post and passes through the through hole, and the second coil is wound on the second winding post and passes through the through hole, making the positions and shapes of the first and second coils symmetrical, further improving the stability of the common-mode inductor and simplifying production and design. A limiting ring is provided on the base, and an installation groove is formed on the inner side of the limiting ring. The closed magnetic core can be installed in the installation groove, and the limiting ring can wrap around the lower... The yoke, which acts as a closed magnetic core, allows it to be securely mounted on the base. The bottoms of the first and second coils abut against the top of the limiting ring, ensuring that the first and second coils are supported and have their offset limited during parallel assembly of the common-mode inductor. Furthermore, since both the first and second coils are wound around the closed magnetic core, the overall stability is further enhanced, preventing coil offset or deformation and thus reducing the defect rate of common-mode inductor production, effectively lowering production costs. In addition, the partition passes through the through-hole and is located between the first and second coils, reducing mutual interference between them, achieving electrical isolation, and improving the electrical safety of the common-mode inductor.

[0032] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0033] Reference Figure 1 and Figure 7 , Figure 1This is a schematic diagram of the structure of a common-mode inductor provided in an embodiment of the present invention. Figure 7 This utility model provides a schematic diagram of the closed magnetic core structure of a common-mode inductor according to an embodiment of the present invention. The embodiment of the present invention provides a common-mode inductor comprising:

[0034] A closed magnetic core 100 is provided with a through hole 110 penetrating through the closed magnetic core 100. The closed magnetic core 100 has opposing first winding posts 120 and second winding posts 130 on both sides. The upper and lower ends of the closed magnetic core 100 have opposing upper yokes 140 and lower yokes 150. A first coil 200 is wound on the first winding post 120 and passes through the through hole 110. A second coil 300 is wound on the second winding post 130 and passes through the through hole 110. A partition 400 passes through the through hole 110 and is located between the first coil 200 and the second coil 300. A base 500 is provided with a limiting ring 510. The inner side of the limiting ring 510 forms a mounting groove 520 for mounting the closed magnetic core 100. The limiting ring 510 wraps around the lower yoke 150. The bottom of the first coil 200 and the bottom of the second coil 300 abut against the top of the limiting ring 510, respectively.

[0035] The partition 400 is located between the first coil 200 and the second coil 300, and the size of the partition 400 is sufficient to completely separate the first coil 200 and the second coil 300.

[0036] It should be noted that the partition 400 can be an insulating material, including plastic, ceramic, epoxy resin and glass fiber reinforced material. The embodiments of this utility model are not limited here.

[0037] It should be noted that a first support body 560 is provided on one side of the bottom of the base 500, and a second support body 570 is provided on the other side of the bottom of the base 500. The bottoms of the first support body 560 and the second support body 570 are on the same horizontal plane. Under the combined action of the first support body 560 and the second support body 570, the base 500 can be effectively supported. Specifically, the first support body 560 includes a first support column 562 and a second support column 563 distributed at intervals, that is, the space between the first support column 562 and the second support column 563 is hollow, which can save materials. Similarly, the second support body 570 includes a third support column 572 and a fourth support column 573 distributed at intervals, that is, the space between the third support column 572 and the fourth support column 573 is also hollow, which can save materials.

[0038] Based on this, the closed magnetic core 100 is provided with a through hole 110 penetrating the closed magnetic core 100. The closed magnetic core 100 has a first winding post 120 and a second winding post 130 on both sides. The upper and lower ends of the closed magnetic core 100 have opposing upper yoke portions 140 and lower yoke portions 150, forming a relatively stable main structure of the common-mode inductor. Then, the first coil 200 is wound on the first winding post 120 and passes through the through hole 110, and the second coil 300 is wound on the second winding post 130 and passes through the through hole 110, making the positions and shapes of the first coil 200 and the second coil 300 symmetrical, further improving the stability of the common-mode inductor and simplifying production and design. A limiting ring 510 is provided on the base 500, and a mounting groove 520 is formed on the inner side of the limiting ring 510. The closed magnetic core 100 can be installed in the mounting groove 520, and the limiting ring 510 can... The lower yoke 150 is wrapped around the core 100, which means that the closed magnetic core 100 can be stably mounted on the base 500. The bottom of the first coil 200 and the bottom of the second coil 300 abut against the top of the limiting ring 510, so that the first coil 200 and the second coil 300 can be supported and restricted from shifting when the common mode inductor is assembled in parallel by the limiting ring 510. In addition, the first coil 200 and the second coil 300 are both wound on the closed magnetic core 100, which further increases the overall stability and can prevent the coils from shifting or deforming, thereby reducing the defect rate of common mode inductor production and effectively reducing production costs. In addition, the partition 400 passes through the through hole 110 and is located between the first coil 200 and the second coil 300, which can reduce the mutual interference between the first coil 200 and the second coil 300, realize electrical isolation, and improve the electrical safety of the common mode inductor.

[0039] Additionally, refer to Figure 2 and Figure 8 , Figure 2 This is a structural schematic diagram of the upright plate and column provided in an embodiment of the present utility model. Figure 8 This is a schematic diagram of the back structure of a common mode inductor base provided in an embodiment of the present invention. In some embodiments of the present invention, a vertical plate 530 is fixed to one side of the base 500, and a partition plate 400 is detachably installed on the vertical plate 530. A first column 532, a second column 533, and a third column 534 are spaced apart on the side of the vertical plate 530 away from the partition plate 400. The upper ends of the first column 532, the second column 533, and the third column 534 are all located above the vertical plate 530, and the lower ends of the first column 532, the second column 533, and the third column 534 all extend downward to the lower end of the base 500. A first receiving groove 535 is formed between the first column 532 and the second column 533, and a second receiving groove 536 is formed between the third column 534 and the second column 533. The first receiving groove 535 is used to receive the first lead 610 at the upper end of the first coil 200, and the second receiving groove 536 is used to receive the second lead 620 at the upper end of the second coil 300.

[0040] The upright plate 530 is perpendicular to the base 500 and is perpendicularly connected to the upper contact surface of the limiting ring 510.

[0041] The upright plate 530 is rectangular, but can also be elliptical or triangular. The lower center of the upright plate 530 is provided with a mounting hole 531 for mounting the partition 400. The partition is provided with a buckle 430, which can be detachably installed in the mounting hole. The mounting hole 531 is rectangular, but can also be elliptical or triangular. This embodiment of the present invention does not limit the shape of the mounting hole 531.

[0042] The cross-section of the upright plate 530 is trapezoidal, but it can also be rectangular or other elliptical. This embodiment of the present invention is not limited to this.

[0043] The first column 532 and the third column 534 are located on both sides of the upright plate 530, and the second column 533 is located in the middle of the upright plate 530.

[0044] It is understandable that since the second column 533 is located in the middle of the upright plate 530, and the mounting hole 531 is also located in the middle of the upright plate 530, the overlapping part of the second column 533 and the mounting hole 531 is broken, dividing the second column 533 into upper and lower parts. Therefore, the existence of the mounting hole 531 can also save materials.

[0045] Among them, the first column 532, the second column 533 and the third column 534 are all long and narrow.

[0046] It should be noted that the lower surface of the base 500 is provided with four cylindrical pins 580. The first lead 610 at the upper end of the first coil 200 passes through one end of the first receiving groove 535, extends down along the first receiving groove 535 from the upper end of the upright plate 530 to the lower end of the upright plate 530, passes through the other end of the first receiving groove 535, and is wound around the cylindrical pin 580 near the first receiving groove 535. The second lead 620 at the upper end of the second coil 300 passes through one end of the second receiving groove 536, extends down along the second receiving groove 536 from the upper end of the upright plate 530 to the lower end of the upright plate 530, passes through the other end of the second receiving groove 536, and is wound around the cylindrical pin 580 near the second receiving groove 536.

[0047] Based on this, a vertical plate 530 is fixed to one side of the base 500, and a partition 400 is detachably installed on the vertical plate 530, allowing the partition 400 to be produced independently. This increases the modularity and flexibility of the production line and simplifies the maintenance and repair of common-mode inductors. Then, on the side of the vertical plate 530 away from the partition 400, a first column 532, a second column 533, and a third column 534 are spaced apart. The upper ends of the first column 532, the second column 533, and the third column 534 are all located above the vertical plate 530, and the lower ends of the first column 532, the second column 533, and the third column 534 extend downwards to the lower end of the base 500. The presence of post 533 and third post 534 can increase the rigidity of the common mode inductor, reduce the risk of deformation of the common mode inductor, and also increase the consistency of the common mode inductor. Furthermore, a first receiving groove 535 is formed between the first post 532 and the second post 533, and a second receiving groove 536 is formed between the third post 534 and the second post 533. The first receiving groove 535 is used to accommodate the first lead 610 at the upper end of the first coil 200, and the second receiving groove 536 is used to accommodate the second lead 620 at the upper end of the second coil 300. The space of the first receiving groove 535 and the second receiving groove 536 is fully utilized, which can reduce the volume of the common mode inductor and improve the integration of the common mode inductor.

[0048] Additionally, refer to Figure 1 and Figure 3 , Figure 3 This utility model provides a schematic diagram of the structure of a common mode inductor base. In some embodiments of this utility model, a first wire passage groove 540 and a second wire passage groove 550 are provided on the other side of the base 500. A wire passage notch 511 is provided on the side of the limiting ring 510 away from the upright plate 530. The third lead 710 at the lower end of the first coil 200 passes through the wire passage notch 511 and the first wire passage groove 540 in sequence. The fourth lead 720 at the lower end of the second coil 300 passes through the wire passage notch 511 and the second wire passage groove 550 in sequence.

[0049] Among them, the wire passage notch 511 is located in the middle of the other side of the base 500. The openings of the first wire passage groove 540 and the second wire passage groove 550 are directly connected to the wire passage notch 511. The first wire passage groove 540 and the second wire passage groove 550 are symmetrically distributed about the central axis of the wire passage notch 511. The sum of the width of the first wire passage groove 540 and the width of the second wire passage groove 550, plus the distance from the first wire passage groove 540 to the second wire passage groove 550, is equivalent to the width of the wire passage notch 511.

[0050] It should be noted that the third lead 710 at the lower end of the first coil 200 passes through the first wire groove 540 and is wound around the cylindrical pin 580 near the first wire groove 540; the fourth lead 720 at the lower end of the second coil 300 passes through the second wire groove 550 and is wound around the cylindrical pin 580 near the second wire groove 550.

[0051] Based on this, a first wire-passing groove 540 and a second wire-passing groove 550 are provided on the other side of the base 500. A wire-passing notch 511 is provided on the side of the limiting ring 510 away from the upright plate 530. The third lead 710 at the lower end of the first coil 200 passes through the wire-passing notch 511 and the first wire-passing groove 540 in sequence, and the fourth lead 720 at the lower end of the second coil 300 passes through the wire-passing notch 511 and the second wire-passing groove 550 in sequence. The wire-passing notch 511 facilitates the passage of the third lead 710 at the lower end of the first coil 200 and the fourth lead 720 at the lower end of the second coil 300, while saving materials for manufacturing the common-mode inductor. In addition, the wire-passing notch 511, the first wire-passing groove 540, and the second wire-passing groove 550 minimize the distance between the third lead 710 and the fourth lead 720 and the cylindrical pin 580, which can reduce the redundancy of the coil, reduce production costs, reduce the heat of the common-mode inductor during operation, and improve reliability.

[0052] Additionally, refer to Figure 2 and Figure 8 In some embodiments of this utility model, the height of the upper end of the second column 533 is the same as the height of the upper yoke 140, the height of the upper end of the first column 532 is greater than the height of the upper end of the first coil 200, and the height of the upper end of the third column 534 is greater than the height of the upper end of the second coil 300.

[0053] Based on this, the height of the upper end of the second post 533 is the same as the height of the upper yoke 140, maintaining the height consistency of the common mode inductor. The height of the upper end of the first post 532 is greater than the height of the upper end of the first coil 200, and the height of the upper end of the third post 534 is greater than the height of the upper end of the second coil 300. Therefore, in the process of producing the common mode inductor, the height of the first post 532 and the third post 534 limits the height of the first coil 200 and the second coil 300, which is equivalent to limiting the winding degree of the first coil 200 and the second coil 300, making it less likely for the first coil 200 and the second coil 300 to be over-wound, thereby reducing the defect rate of producing the common mode inductor.

[0054] Additionally, refer to Figure 2 and Figure 8 In some embodiments of this utility model, the height of the upper end of the first column 532 and the height of the upper end of the third column 534 are both less than the height of the upper end of the second column 533.

[0055] Based on this, the height of the upper end of the first column 532 and the upper end of the third column 534 are both less than the height of the upper end of the second column 533. This ensures that when the first coil 200 and the second coil 300 are wound and need to be led out, the wire will be restricted by the second column 533 in the first receiving groove 535 or the second receiving groove 536, and will not cross the second column 533. This can facilitate the positioning of the lead-out wire while minimizing the possibility of poor lead-out wire.

[0056] Additionally, refer to Figure 3 In some embodiments of this utility model, the base 500, the limiting ring 510, the upright plate 530, the first upright 532, the second upright 533, and the third upright 534 are integrally formed.

[0057] Based on this, the base 500, the limiting ring 510, the upright plate 530, the first upright 532, the second upright 533, and the third upright 534 are integrally formed, which can increase the rigidity of the common mode inductor, reduce the probability of deformation, and reduce the defect rate of common mode inductors. In addition, the manufacturing process corresponding to integral forming usually only requires one mold and does not require additional assembly steps, which can reduce production links and reduce production costs.

[0058] Additionally, refer to Figure 4 , Figure 4 This is a cross-sectional schematic diagram of a limiting ring for a common mode inductor provided in an embodiment of the present invention. In some embodiments of the present invention, the cross-section of the limiting ring 510 is in the shape of an annular racetrack.

[0059] The limiting ring 510 can have a certain height, so that an installation groove 520 with a certain depth can be formed on the inner side of the limiting ring 510.

[0060] Based on this, the cross-section of the limiting ring 510 is in the shape of a ring racetrack, which can adapt to the shape of the lower yoke 150 of the closed magnetic core 100 and the shapes of the first coil 200 and the second coil 300, thereby improving the overall coordination of the common mode inductor.

[0061] Additionally, refer to Figure 5 , Figure 5 This is a schematic diagram of the structure of a first baffle and a second baffle of a common mode inductor provided in an embodiment of the present invention. In some embodiments of the present invention, a first baffle 410 and a second baffle 420 are provided on the top of the partition 400. The first baffle 410 is located above the first coil 200, and the second baffle 420 is located above the second coil 300.

[0062] It is understood that the first baffle 410 and the second baffle 420 are both rectangular, but can also be elliptical or triangular. This embodiment of the present invention does not limit the shape.

[0063] The first baffle 410 and the second baffle 420 do not touch the closed magnetic core 100, and the first baffle 410 covers the part of the first coil 200 near the partition 400, and the second baffle 420 covers the part of the second coil 300 near the partition 400.

[0064] Based on this, a first baffle 410 and a second baffle 420 are provided on the top of the partition 400. The first baffle 410 is located above the first coil 200, and the second baffle 420 is located above the second coil 300. In cooperation with the partition 400, the mutual interference between the first coil 200 and the second coil 300 can be further reduced, and the electrical safety of the common mode inductor can be further improved.

[0065] Additionally, refer to Figure 5 In some embodiments of this utility model, the height of the first baffle 410 is the same as the height of the second baffle 420.

[0066] It is understandable that the first baffle 410 and the second baffle 420 have the same shape and size, and the front view of the structure formed by the partition 400, the first baffle 410 and the second baffle 420 is T-shaped.

[0067] Based on this, the height of the first baffle 410 is the same as the height of the second baffle 420, which can improve the symmetry of the common mode inductor, enabling the common mode inductor to handle common mode noise more evenly and improve the stability of the common mode inductor. In addition, it can simplify production and design, make it easier to achieve standardized and modular production, reduce the need for debugging and calibration, and improve production efficiency.

[0068] Additionally, refer to Figure 6 , Figure 6 This is a schematic diagram of the reinforcing ribs of a common mode inductor provided in an embodiment of the present invention. In some embodiments of the present invention, the bottom of the base 500 is provided with multiple reinforcing ribs 590.

[0069] When there are two reinforcing ribs 590, the structure formed by the two reinforcing ribs 590 is cross-shaped, and the center of the cross coincides with the center of the base 500.

[0070] Specifically, one end of one of the reinforcing ribs 590 is connected to the lower end of the second column 533, and the other end is connected to the middle protrusion of the first wire channel 540 and the second wire channel 550; the first support body 560 also includes a first connecting part 561, the bottom of the base 500 is connected to the top of the first connecting part 561, the top of the first support column 562 and the top of the second support column 563 are both connected to the bottom of the first connecting part 561, the second support body 570 also includes a second connecting part 571, the bottom of the base 500 is connected to the top of the second connecting part 571, the top of the third support column 572 and the top of the fourth support column 573 are both connected to the bottom of the second connecting part 571, one end of the other reinforcing rib 590 is connected to the first connecting part 561, and the other end of the other reinforcing rib 590 is connected to the second connecting part 571.

[0071] Based on this, the bottom of the base 500 is provided with multiple reinforcing ribs 590, which can increase the stability and electrical safety of the common mode inductor, while also facilitating the positioning and judgment of processes such as soldering, reducing the defect rate of common mode inductors and reducing production costs.

[0072] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A common-mode inductor, characterized in that, include: A closed magnetic core is provided with a through hole penetrating the closed magnetic core. The closed magnetic core has a first winding post and a second winding post on both sides, and the upper and lower ends of the closed magnetic core have an upper yoke and a lower yoke. The first coil is wound around the first winding post and passes through the through hole; The second coil is wound around the second winding post and passes through the through hole; A partition, passing through the through hole and located between the first coil and the second coil; The base has a limiting ring on it, and an installation groove is formed on the inner side of the limiting ring. The installation groove is used to install the closed magnetic core. The limiting ring wraps around the lower yoke. The bottom of the first coil and the bottom of the second coil respectively abut against the top of the limiting ring.

2. A common-mode inductor according to claim 1, characterized in that, A vertical plate is fixed to one side of the base, and the partition is detachably installed on the vertical plate. A first column, a second column, and a third column are spaced apart on the side of the vertical plate away from the partition. The upper ends of the first column, the second column, and the third column are all located above the vertical plate, and the lower ends of the first column, the second column, and the third column all extend downward to the lower end of the base. A first receiving groove is formed between the first column and the second column, and a second receiving groove is formed between the third column and the second column. The first receiving groove is used to receive the first lead wire at the upper end of the first coil, and the second receiving groove is used to receive the second lead wire at the upper end of the second coil.

3. A common-mode inductor according to claim 2, characterized in that, The other side of the base is provided with a first wire passage groove and a second wire passage groove. The side of the limiting ring away from the upright plate is provided with a wire passage notch. The third lead at the lower end of the first coil passes through the wire passage notch and the first wire passage groove in sequence. The fourth lead at the lower end of the second coil passes through the wire passage notch and the second wire passage groove in sequence.

4. A common-mode inductor according to claim 2, characterized in that, The height of the upper end of the second column is the same as the height of the upper yoke, the height of the upper end of the first column is greater than the height of the upper end of the first coil, and the height of the upper end of the third column is greater than the height of the upper end of the second coil.

5. A common-mode inductor according to claim 4, characterized in that, The height of the upper end of the first column and the upper end of the third column are both less than the height of the upper end of the second column.

6. A common-mode inductor according to claim 2, characterized in that, The base, the limiting ring, the upright plate, the first upright, the second upright, and the third upright are integrally formed.

7. A common-mode inductor according to claim 1, characterized in that, The cross-section of the limiting ring is shaped like a ring racetrack.

8. A common-mode inductor according to claim 1, characterized in that, The top of the partition is provided with a first baffle and a second baffle, the first baffle being located above the first coil and the second baffle being located above the second coil.

9. A common-mode inductor according to claim 8, characterized in that, The height of the first baffle is the same as the height of the second baffle.

10. A common-mode inductor according to claim 1, characterized in that, The base has multiple reinforcing ribs at its bottom.

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