Sinking in-line common mode choke

Abstract

The utility model discloses a sinking direct insertion type common mode inductor, which relates to the technical field of common mode inductors and comprises a base, a mounting groove arranged at the bottom of the base, a closed magnetic core arranged in the mounting groove, a partition plate arranged in the middle of the mounting groove and penetrating through the closed magnetic core, and coils symmetrically wound at two ends of the closed magnetic core. The overall height of the base fixedly connected with the closed magnetic core is smaller than the diameter of the coil; pins penetrate through the four corners of the base, and the two pins located at the same end are connected with the two ends of the coil located at the same end respectively; the sinking direct-insertion type common mode inductor is compact in structure and rapid to install, the overall size can be reduced, the overall weight can be reduced, and the sinking direct-insertion type common mode inductor can meet the requirement of a high-density circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of common mode inductors, in particular to a sinking direct-insertion common mode inductor. Background Art

[0002] In the development of electronic products, miniaturization and high performance have always been the key design directions. With the advancement of technology, high-density integration of circuit boards has become an important trend in the design of modern electronic devices. This trend has put forward higher requirements on the volume of components on circuit boards, especially for passive components such as inductors.

[0003] Traditional inductor designs are usually large in size, which not only takes up valuable board space but also increases the overall weight of the board. Utility Model Content

[0004] The utility model aims to provide a sinking direct-insertion common-mode inductor, which has a compact structure and is quick to install, can reduce the overall volume and weight, and can meet the needs of high-density circuit boards.

[0005] The above-mentioned optimized structure of the utility model is achieved through the following technical solutions: a sunken direct-insert common-mode inductor, including a base, a mounting groove is provided at the bottom of the base, a closed magnetic core is provided in the mounting groove, a partition is provided in the middle of the mounting groove, the partition passes through the closed magnetic core, coils are symmetrically wound at both ends of the closed magnetic core, and the overall height of the base fixedly connected to the closed magnetic core is less than the diameter of the coil; pins are penetrated at the four corners of the base, and the two pins located at the same end are respectively connected to the two ends of the coil located at the same end.

[0006] In some embodiments, connection grooves are provided at the four corners of the top of the base, and the pins are provided in the connection grooves.

[0007] In some embodiments, the connection point between the coil and the pin top is located within the connection slot.

[0008] In some embodiments, the partition has a cross-section of an isosceles trapezoid.

[0009] In some embodiments, two sides of the isosceles trapezoid are arc sides.

[0010] In some embodiments, the closed magnetic core is a square ring, and the four corners of the closed magnetic core are rounded.

[0011] In some embodiments, a height of the closed magnetic core is greater than a height of the mounting slot.

[0012] In some embodiments, the coil is a flat coil.

[0013] In some embodiments, the base includes an H-shaped fixing frame, the partition is provided on the fixing frame, L-shaped limit blocks are provided at the four corners of the fixing frame, the connecting groove is provided between the top of the limit block and the fixing frame, and the four limit blocks and the fixing frame are provided with the installation groove.

[0014] In summary, the utility model has the following beneficial effects:

[0015] This type of sunken direct-insert common-mode inductor has a mounting groove on the base, a closed magnetic core in the mounting groove, and a coil wound on the closed magnetic core, so that the overall height of the base and the closed magnetic core fixedly connected is less than the diameter of the coil, and the overall structure is compact, while the overall volume and weight can be reduced to meet the space requirements of high-density circuit boards; and the two ends of the coil are connected to the top of the pin, and the connection point is set in the connection groove, and can be directly inserted into the circuit board, which is convenient for installation and can improve the connection strength between the closed magnetic core and the base, thereby improving the overall stability and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a structural diagram of the utility model from another perspective;

[0018] Figure 3 It is a side view of the utility model;

[0019] Figure 4 This is a structural diagram of the utility model in which the pins are installed on the base.

[0020] In the figure: 1. base; 2. partition; 3. mounting slot; 4. closed magnetic core; 5. coil; 6. pin. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] refer to Figure 1-4A sunken direct-insertion common-mode inductor includes a base 1, which may include an H-shaped fixing frame, and L-shaped limit blocks are provided at the four corners of the fixing frame to reduce the weight of the base 1; a mounting groove 3 is formed between the four limit blocks and the fixing frame, and a closed magnetic core 4 is provided in the mounting groove 3 to form a sunken structure, which can improve the overall compactness of the structure; the closed magnetic core 4 can be a square ring, and its four corners are rounded, which helps to reduce sharp edges and corners, reduce the risk of damage, and also helps to concentrate the magnetic field.

[0023] A partition 2 is provided on the fixing frame, and the partition 2 is located in the middle of the mounting groove 3. The partition 2 passes through the closed magnetic core 4, and coils 5 are symmetrically wound at both ends of the closed magnetic core 4. The partition 2 can be used as an isolation and insulation barrier to achieve isolation and insulation between the two coils 5, so that a safe distance is achieved between the two coils 5 to avoid mutual influence between the two coils 5. The overall height of the base 1 fixedly connected to the closed magnetic core 4 is less than the diameter of the coil 5; the overall structure is compact, and the overall volume and weight can be reduced at the same time, thereby meeting the space requirements of high-density circuit boards.

[0024] The top of the limit block is connected to the bottom of the fixing frame, so that a connection groove 11 is formed between the top of the limit block and the bottom of the fixing frame. A pin 6 is provided in the connection groove 11, and the pin 6 passes through the base 1 and extends to the outside, so that the inductor can be directly inserted into the circuit board for direct installation; the two pins 6 located at the same end are respectively connected to the two ends of the coil 5 located at the same end. The connection between the coil 5 and the top of the pin 6 can improve the connection strength between the closed magnetic core 4 and the base 1, thereby improving the overall stability. The connection point between the coil 5 and the top of the pin 6 is located in the connection groove 11, which helps to protect the connection point and reduce the occurrence of accidental disconnection, thereby extending the service life. Since the connection point between the coil 5 and the pin 6 and the installation position of the closed magnetic core 4 are located at both ends, when the coil 5 is connected to the pin 6, the coil 5 applies a lifting force to the closed magnetic core 4 through the pin 6, thereby reducing the influence of the gravity of the closed magnetic core 4 itself, improving the connection strength between the closed magnetic core 4 and the base 1, further improving the overall compactness of the inductor, and reducing the occupied space.

[0025] In some embodiments, the cross-section of the partition 2 is an isosceles trapezoid, and the two sides of the isosceles trapezoid are arc edges, so that the space between the partition 2 and the mounting groove 3 is closer to the winding shape of the coil 5 on the closed magnetic core 4, which can improve the space utilization efficiency, make the overall structure more compact, reduce material usage, and maintain the stability of the structure.

[0026] In some embodiments, the height of the closed magnetic core 4 may be greater than the height of the mounting slot 3, which may reduce the overall height of the base 1, thereby making the diameter of the coil tightly wound on the closed magnetic core 4 larger than the entire closed magnetic core 4 fixed on the base 1, making the overall structure more compact.

[0027] In some embodiments, coil 5 can be a flat coil, which can reduce the volume of the inductor and improve the current carrying capacity of the inductor; by winding the coil with flat wire, the inter-turn capacitance of coil 5 can be reduced, and the electromagnetic interference effect of the power supply can be more easily reduced. Under the same performance requirements, a smaller volume can be achieved. When the coil 5 is not insulated, an effective safety distance effect and insulation effect can be achieved. At the same time, automated winding can be achieved, shortening processing time and thereby reducing production costs and improving work efficiency, thereby reducing winding production costs and improving product quality.

[0028] The specific working principle is as follows:

[0029] When current passes through the coil 5, a magnetic field is generated in the closed magnetic core 4. Since the closed magnetic core 4 is designed as a closed structure, it can effectively guide the magnetic field, reduce the leakage of the magnetic field, and improve the efficiency of the inductor. A mounting groove 3 is set on the base 1, and a closed magnetic core 4 is set in the mounting groove 3. The coil 5 is wound on the closed magnetic core 4, so that the overall height of the base 1 and the closed magnetic core 4 is fixedly connected is less than the diameter of the coil 5. The overall structure is compact, and the overall volume and weight can be reduced at the same time, which can meet the needs of high-density circuit boards; and the two ends of the coil 5 are connected to the top of the pin 6, and the connection point is set in the connection groove 3, which can be directly inserted into the circuit board, which is convenient for installation and rotation while improving the connection strength between the closed magnetic core 4 and the base 1, thereby improving the overall stability.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sunken direct-insertion common-mode inductor, comprising a base (1), a mounting groove (3) being provided at the bottom of the base (1), a closed magnetic core (4) being provided in the mounting groove (3), a partition (2) being provided in the middle of the mounting groove (3), the partition (2) passing through the closed magnetic core (4), and coils (5) being symmetrically wound at both ends of the closed magnetic core (4), characterized in that: The overall height of the base (1) and the closed magnetic core (4) fixedly connected is smaller than the diameter of the coil (5); pins (6) are provided through the four corners of the base (1), and two pins (6) located at the same end are respectively connected to the two ends of the coil (5) located at the same end.

2. The sinking direct-insertion common mode inductor according to claim 1, characterized in that: The four corners of the top of the base (1) are provided with connection grooves (11), and the pins (6) are arranged in the connection grooves (11).

3. The sinking direct-insertion common mode inductor according to claim 2, characterized in that: The connection point between the coil (5) and the top of the pin (6) is located in the connection groove (11).

4. The sinking direct-insertion common mode inductor according to claim 1, characterized in that: The cross section of the partition (2) is an isosceles trapezoid.

5. The sinking direct-insertion common mode inductor according to claim 4, characterized in that: The two sides of the isosceles trapezoid are arc sides.

6. The sinking direct-insertion common mode inductor according to claim 1, characterized in that: The closed magnetic core (4) is a square ring, and the four corners of the closed magnetic core (4) are all rounded.

7. The sinking direct-insertion common mode inductor according to claim 1, characterized in that: The height of the closed magnetic core (4) is greater than the height of the mounting groove (3).

8. The sinking direct-insertion common mode inductor according to claim 1, characterized in that: The coil (5) is a flat coil.

9. The sinking direct-insertion common mode inductor according to claim 2, characterized in that: The base (1) comprises an H-shaped fixing frame, the partition (2) is provided on the fixing frame, L-shaped limit blocks are provided at the four corners of the fixing frame, the connecting groove (11) is provided between the top of the limit block and the fixing frame, and the four limit blocks and the fixing frame are provided with the mounting groove (3).

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