Novel four-phase vehicle-mounted common mode inductor

Abstract

The utility model discloses a novel four-phase vehicle-mounted common-mode inductor which is characterized in that a magnetic core is divided into four sections, the adjacent sections are separated by partition plates, and each section is wound with a winding; the magnetic core is installed on the base, a plurality of sets of supporting legs are arranged on the face, away from the magnetic core, of the base, one set of supporting legs is provided with two foot columns, and an avoiding space is formed between every two adjacent foot columns. Four-way high-frequency interference resistance is realized; the working efficiency of the circuit is improved; and the space utilization rate of the PCB is improved through the overhead space and the avoidance space.

Description

Technical Field

[0001] The utility model relates to the field of common-mode inductor structures, in particular to a novel four-phase vehicle-mounted common-mode inductor. Background Art

[0002] With the continuous upgrading of automotive electronic technology, automotive common-mode inductors are also constantly upgrading. Their main function is to suppress the interference of high-frequency noise on related circuits, improve the working efficiency of corresponding circuits, and improve the electromagnetic compatibility of circuits. At the same time, there is no safety hazard to its surrounding components.

[0003] Existing vehicle-mounted common-mode inductors are generally two-winding type, which cannot achieve four-way filtering, and the noise suppression effect is not ideal. The filtering effect is also unstable, resulting in large losses in components. Secondly, they are large in size and occupy a large volume in the limited installation space, forcing other structures and layout methods to make concessions, which ultimately leads to an increase in the cost of vehicle-mounted equipment using inductors.

[0004] Therefore, there is an urgent need for a new four-phase vehicle-mounted common-mode inductor that can solve one or more of the above problems. Utility Model Content

[0005] In order to solve one or more problems existing in the prior art, the utility model provides a novel four-phase vehicle-mounted common-mode inductor. The technical solution adopted by the utility model to solve the above problems is: a novel four-phase vehicle-mounted common-mode inductor, which includes: a magnetic core is divided into four sections, adjacent sections are separated by partitions, and each section is wound with a winding;

[0006] The magnetic core is supported and installed on the base through the partition. A side of the base facing away from the magnetic core is provided with multiple groups of supporting feet. One group of the supporting feet is provided with two foot posts, and an escape space is formed between two adjacent foot posts.

[0007] In some embodiments, the foot column is provided with a through hole extending vertically therethrough, and the through hole is used for installing a connecting rod.

[0008] In some embodiments, a limiting groove is provided at the lower end of the partition, and a limiting flange is provided at the base, and the limiting groove is snap-connected with the limiting flange.

[0009] In some embodiments, the base is provided with a reinforcing flange, and the reinforcing flange surrounds the magnetic core.

[0010] In some embodiments, the supporting legs are provided in four groups, and two groups of the supporting legs are respectively provided on two opposite sides of the base.

[0011] Furthermore, the foot columns located on the same side are connected together by a reinforcing plate, and the reinforcing plate is arranged at one end of the foot column close to the base.

[0012] In some embodiments, the inner end of the partition plate faces the magnetic core, and the width of the section of the partition plate in contact with the winding gradually decreases from outside to inside.

[0013] The technical effects achieved by the present utility model are as follows: four intervals are formed by the partition plate, and one winding is wound in each interval. The finished common mode inductor can achieve four-way filtering, achieving the purpose of four-way high-frequency interference resistance and improving the working efficiency of the circuit;

[0014] Through the overhead structure formed by the foot posts, a large overhead space is left after the common mode inductor is inserted into the PCB, and an avoidance space is formed between the foot posts. The overhead space and the avoidance space are used to realize the insertion of other components on the PCB, improving the space utilization rate of the PCB. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a top view of the present utility model;

[0016] Figure 2 is an exploded schematic view of the present utility model;

[0017] Figure 3 is a schematic view of the base of the present utility model.

[0018]

REFERENCE NUMERALS

[0019] 1, magnetic core; 10, winding; 101, first interval; 102, second interval; 103, third interval; 104, fourth interval; 11, partition plate; 110, limit groove; 2, base; 20, limit flange; 21, support foot; 210, foot post; 2100, through hole; 211, avoidance space; 22, connecting rod; 23, reinforcing flange; 24, reinforcing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the above objects, features and advantages of the present utility model more comprehensible, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from this description, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0021] As Figures 1-3 shown, the present utility model discloses a novel four-phase vehicle-mounted common mode inductor. The magnetic core 1 of the common mode inductor is divided into four intervals, namely the first interval 101, the second interval 102, the third interval 103 and the fourth interval 104. Two opposite intervals can be symmetrically arranged, and adjacent intervals are separated by a partition plate 11. Each interval is wound with a winding 10;

[0022] The magnetic core 1 is supported and installed on the base 2 through the partition 11. On one side of the base 2 facing away from the magnetic core 1, multiple groups of support feet 21 are provided. One group of the support feet 21 is provided with two foot posts 210, and an avoidance space 211 is formed between two adjacent foot posts 210. The base 2 is connected to the PCB through the foot posts 210.

[0023] It should be noted that each winding 10 has two independent lead-out ends and is electrically connected to the PCB through the lead-out ends, thereby forming a four-way filter inductor. The number of turns of each winding 10 is set according to requirements. The overhead height formed by the foot posts 210 can be 25.5 mm, and the overhead height is adjusted according to actual needs.

[0024] It should be pointed out that as Figure 1 shown, the inner end of the partition 11 faces the magnetic core 1, and the width of a section of the partition 11 in contact with the winding 10 gradually decreases from outside to inside, aiming to reduce the space occupied by the partition 11, increase the number of turns of the winding 10 in this interval, and thus improve the space utilization rate of the entire magnetic core 1.

[0025] Specifically, as shown in combination with Figure 2 shown, the foot post 210 is provided with a through hole 2100 penetrating up and down. The through hole 2100 is used to install the connecting rod 22. The base 2 is fixedly connected to the lower PCB through the connecting rod 22, and the winding 10 can also be electrically connected to the PCB through the connecting rod 22.

[0026] Specifically, as shown in combination with Figure 2 , Figure 3 shown, the lower end of the partition 11 is provided with a limiting groove 110, and the base 2 is provided with a limiting flange 20. The limiting groove 110 is clamped with the limiting flange 20 to limit the rotation of the magnetic core 1. After the limiting groove 110 and the limiting flange 20 are clamped and assembled, they can be fixed by ultrasonic welding or other means.

[0027] Specifically, as shown in combination with Figure 3 shown, the base 2 is provided with a reinforcing flange 23. The reinforcing flange 23 surrounds the magnetic core 1. The reinforcing flange 23 is generally arranged at the corners of the base 2, aiming to protect the magnetic core 1 inside the base 2.

[0028] Furthermore, there are four groups of the support feet 21, that is, there are eight foot posts 210. Two groups of the support feet 21 are respectively arranged on two opposite sides of the base 2. The foot posts 210 on the same side are connected together by a reinforcing plate 24. The reinforcing plate 24 is arranged at one end of the foot post 210 close to the base 2.

[0029] In summary, by forming four intervals with partitions and winding one winding around each interval, the finished common mode inductor can achieve four-way filtering, achieving the purpose of four-way high-frequency interference resistance and improving the working efficiency of the circuit;

[0030] The overhead structure formed by the pin columns enables a large overhead space to be left after the common mode inductor is inserted into the PCB, and an avoidance space is formed between the pin columns. The overhead space and the avoidance space are used to realize the insertion of other components on the PCB, improving the space utilization rate of the PCB.

[0031] The above-described embodiments only represent one or more implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A novel four-phase vehicle-mounted common-mode inductor, characterized in that: The magnetic core is divided into four sections, adjacent sections are separated by partitions, and each section is wound with a winding; The magnetic core is mounted on a base, and a plurality of groups of supporting feet are arranged on a side of the base facing away from the magnetic core. One group of the supporting feet is provided with two foot posts, and an escape space is formed between two adjacent foot posts.

2. The novel four-phase vehicle-mounted common-mode inductor according to claim 1 is characterized in that: The foot column is provided with a through hole penetrating up and down, and the through hole is used for installing the connecting rod.

3. The novel four-phase vehicle-mounted common-mode inductor according to claim 1 is characterized in that: A limiting groove is arranged at the lower end of the partition, and a limiting flange is arranged at the base, and the limiting groove is clamped with the limiting flange.

4. The novel four-phase vehicle-mounted common-mode inductor according to claim 1 is characterized in that: The base is provided with a reinforcement flange, and the reinforcement flange surrounds the magnetic core.

5. The novel four-phase vehicle-mounted common-mode inductor according to claim 1 is characterized in that: The supporting legs are provided in four groups, and two groups of the supporting legs are respectively provided on two opposite sides of the base.

6. The novel four-phase vehicle-mounted common-mode inductor according to claim 5 is characterized in that: The foot columns located on the same side are connected together by a reinforcing plate, and the reinforcing plate is arranged at one end of the foot column close to the base.

7. The novel four-phase vehicle-mounted common-mode inductor according to claim 1 is characterized in that: The inner end of the partition faces the magnetic core, and the width of a section of the partition connected to the winding gradually decreases from the outside to the inside.

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