Common mode inductor with raised semi-closed structure

Abstract

The utility model discloses a common-mode inductor with a lifting type semi-closed structure, which relates to the technical field of common-mode inductors and comprises a base, a magnetic core fixed inside the base and a plurality of coils wound outside the magnetic core, two sides of the bottom of the base are connected with bottom feet, the height of the base after installation can be lifted through the bottom feet, and the bottom feet are connected with the coils. A cavity which can contain other electronic elements and is of a semi-closed structure is formed between the bottom feet. The base adopts a heightened PIN-free structure, so that the inductor body is effectively raised, other components can be mounted below the inductor body, the use of a PCB (Printed Circuit Board) area is remarkably reduced, the length and width of finished equipment are further reduced, and the space utilization rate of a product is greatly improved; meanwhile, due to the semi-closed structural design of the base, the bottom and the four side faces of the inductor body are closed, a safe isolation environment is provided for an inductor conductor part, and an adhesive tape wrapping mode is not needed for additional protection.

Description

Technical Field

[0001] The utility model relates to the technical field of common-mode inductors, in particular to a common-mode inductor with an elevated semi-enclosed structure. Background Art

[0002] In current electronic device design, common-mode inductors are important electronic components and are widely used in various circuits to suppress common-mode noise and interference. However, traditional common-mode inductors have many design limitations, especially in terms of installation and space utilization.

[0003] Traditional common-mode inductors primarily utilize a base with pins or an epoxy board without pins. In both designs, the inductor is typically mounted directly on the PCB (printed circuit board), preventing other electronic components from being installed between the base or baseboard and the PCB. This design significantly limits the density of component placement on the board, making it difficult to fit more components within the limited space and PCB area. In modern electronic devices, as functional complexity increases and the demand for more components continues to rise, this design approach clearly cannot meet the requirements for efficient and compact circuit design.

[0004] Furthermore, when using a PIN-free epoxy board as the base, the inductor's body is exposed on all five sides except for the bottom, which contacts the PCB. This design, when space is limited on the board and other components must be placed close to the inductor, often requires additional tape wrapping around the inductor's conductors to ensure electrical safety. This not only increases production complexity and cost, but the use of tape can also adversely affect inductor performance, such as increasing parasitic capacitance and inductance. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a common-mode inductor with an elevated semi-enclosed structure, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a common-mode inductor with an elevated semi-enclosed structure, comprising a base, a magnetic core fixed inside the base, and a plurality of coils wound around the outside of the magnetic core.

[0007] Both sides of the bottom of the base are connected with feet, which can raise the height of the base after installation. A cavity with a semi-enclosed structure that can accommodate other electronic components is formed between the feet.

[0008] Furthermore, a partition is connected to the interior of the base, and the interior of the base is divided into two chambers by the partition.

[0009] Furthermore, a reserved groove is provided at the bottom of each chamber, and the reserved groove can accommodate the magnetic core wound outside the coil.

[0010] Furthermore, wire threading grooves are provided on both sides of each chamber, and a plurality of wire threading channels are provided inside the base, and the wire threading grooves and the wire threading channels are connected.

[0011] Furthermore, the coil has a pin, which passes through the inside of the threading groove and the threading channel and extends to the bottom of the base.

[0012] Furthermore, the bottom ends of the base feet are connected to alignment pieces, and the alignment pieces are configured as columnar structures.

[0013] The utility model provides a common-mode inductor with an elevated semi-enclosed structure. Compared with the prior art, it has the following advantages:

[0014] This common-mode inductor adopts a raised PIN-free structure on the base, which not only effectively elevates the inductor body, allowing other components to be installed underneath the inductor body, thereby significantly reducing the used PCB area, thereby reducing the length and width of the finished device and greatly improving the product's space utilization. At the same time, the semi-enclosed structural design of the base encloses the bottom and four sides of the inductor body, providing a safe isolation environment for the inductor conductor part, eliminating the need for additional protection by wrapping with tape. This not only simplifies the production process, but also reduces labor costs, improves production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the split structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the base in the present invention from a top view;

[0017] Figure 3 This is a schematic diagram of the structure of the base in the present invention when viewed from above;

[0018] Figure 4 This is a front view of the base in the utility model;

[0019] Figure 5 It is a half-section view of the utility model after assembly.

[0020] In the figure: 1. Base; 11. Bottom foot; 12. Partition; 13. Reserved slot; 14. Threading slot; 15. Threading channel; 16. Alignment piece; 17. Cavity; 2. Magnetic core; 3. Coil; 31. Pin. DETAILED DESCRIPTION

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

[0022] See also Figure 1-5 The utility model provides a technical solution: a common-mode inductor with an elevated semi-enclosed structure, mainly composed of a base 1, a "mouth"-shaped magnetic core 2, and two coils 3, wherein the two coils 3 are symmetrically wound on the outside of the magnetic core 2, and each coil 3 forms two pins 31 after winding. Then, the coil 3 and the magnetic core 2 are assembled inside the base 1;

[0023] Specifically, feet 11 are integrally connected to both sides of the bottom of the base 1. The feet 11 can raise the height of the base 1 after installation. A semi-enclosed cavity 17 capable of accommodating other electronic components is formed between the feet 11. The cavity 17 can accommodate other electronic components, thereby improving space utilization and making the structure of the entire electronic device more compact.

[0024] In addition, a partition 12 is connected to the interior of the base 1, dividing the internal space of the base 1 into two independent chambers. This design allows for more efficient use of the space within the inductor and facilitates the management and maintenance of the different coils 3 and magnetic cores 2. The bottom of each chamber is provided with a reserved slot 13, which can accommodate the magnetic core 2 wound around the outside of the coil 3. This ensures that the magnetic core 2 is stably fixed inside the base 1 and avoids the problem of inductor performance degradation caused by the movement of the magnetic core 2.

[0025] Furthermore, a wire threading groove 14 is provided on both sides of each chamber, and a plurality of wire threading channels 15 are also provided inside the base 11, and the wire threading groove 14 and the wire threading channels 15 are connected. Such a design can facilitate the pin 31 of the coil 3 to pass through the wire threading groove 14 and the wire threading channel 15, and extend to the bottom of the base 11, thereby facilitating the connection between the inductor and other electronic components. The pin 31 passes through the inside of the wire threading groove 14 and the wire threading channel 15, and extends to the bottom of the base 11. Such a design can ensure that the pin 31 will not be obstructed during the passing-out process, and also facilitates the subsequent welding and processing of the pin 31. The bottom end of the base 11 is connected to a positioning member 16, which is set to a columnar structure. The setting of the positioning member 16 can facilitate the positioning of the inductor during the installation process, ensure that the inductor can be accurately installed in the predetermined position, and improve the installation efficiency and accuracy.

[0026] In summary, the common-mode inductor's base features a raised, pin-less design. By elevating the inductor body, other components can be installed underneath the inductor, effectively reducing PCB area, reducing the size of the finished device, and significantly improving space utilization. Furthermore, the base's semi-enclosed structure seals the bottom and four sides of the inductor body, safely isolating the inductor conductor from other components. This eliminates the need for traditional protective tape, simplifies the production process, and reduces labor costs. This design not only optimizes inductor installation and space utilization, but also improves circuit stability and reliability, providing strong support for the miniaturization and efficiency of modern electronic equipment. It is particularly suitable for electronic equipment manufacturing, which has strict requirements on space utilization and production costs.

Claims

1. A common-mode inductor with an elevated semi-enclosed structure, comprising a base (1), a magnetic core (2) fixed inside the base (1), and a plurality of coils (3) wound around the outside of the magnetic core (2), characterized in that: Both sides of the bottom of the base (1) are connected to feet (11), and the height of the base (1) after installation can be raised by the feet (11). A cavity (17) with a semi-enclosed structure capable of accommodating other electronic components is formed between the feet (11).

2. The common-mode inductor with an elevated semi-enclosed structure according to claim 1, wherein: The interior of the base (1) is connected to a partition (12), and the interior of the base (1) is divided into two chambers by the partition (12).

3. The common-mode inductor with an elevated semi-enclosed structure according to claim 2, wherein: A reserved groove (13) is provided at the bottom of each chamber, and the reserved groove (13) can accommodate the magnetic core (2) wound outside the coil (3).

4. The common-mode inductor with an elevated semi-enclosed structure according to claim 2, wherein: Threading grooves (14) are provided on both sides of each chamber, and a plurality of threading channels (15) are provided inside the base (11), wherein the threading grooves (14) and the threading channels (15) are connected.

5. The common-mode inductor with an elevated semi-enclosed structure according to claim 4, characterized in that: The coil (3) has a pin (31), and the pin (31) passes through the inside of the threading groove (14) and the threading channel (15) and extends to the bottom of the base (11).

6. The common-mode inductor with an elevated semi-enclosed structure according to claim 1, wherein: The bottom ends of the base feet (11) are connected to alignment pieces (16), and the alignment pieces (16) are configured as columnar structures.

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