Novel structure flat coil differential mode inductor

Abstract

The utility model discloses a flat coil differential mode inductor with a novel structure, which comprises a magnetic core and a coil, and is characterized by further comprising a mounting plate, the magnetic core comprises two side columns and two magnet yokes, the side columns and the magnet yokes are square columns, the side walls of the two side columns are provided with caulking grooves for the two magnet yokes to insert, the two side columns and the two magnet yokes are spliced into a rectangular structure, and the mounting plate is arranged on the mounting plate. The magnetic core is formed by splicing the two side columns and the two magnet yokes, the splicing process is simple, the formed square structure has high saturation bias current, the inductance value is improved, the magnetic core is assembled on the two magnet yokes, the coil is assembled on the two magnet yokes, the two side columns are inserted into the slots, and the pins are arranged at the bottom of the mounting plate. The magnetic core and the side column are easy to produce through a mold, the manufacturing time and the manufacturing cost are reduced, the coil can be assembled on the magnet yoke firstly, then the magnet yoke and the side column are spliced, the manufacturing time is short, the operation is simple and convenient, the current borne by the enameled wire is improved under the condition that a large space is not needed, and the use efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of inductance, in particular to a flat coil differential mode inductance with a new structure. Background Art

[0002] Differential mode inductor is an inductor with large inductive reactance to differential mode high-frequency interference. The AC power current must flow through it. When the AC frequency is constant, the larger the inductance, the greater the resistance to AC, and the smaller the inductance, the smaller the resistance. When the inductance is constant, the higher the frequency of AC, the greater the resistance of the inductor to AC, and the lower the frequency, the smaller the resistance of the inductor to AC.

[0003] Traditional differential mode inductors are usually of the following ring structures, I-shaped structures, patch structures, and E-shaped structures. These structures are usually used in low-power switching power supply circuits. The required current is often not high and the cost is relatively low. In high-power switching power supply circuits, if this type of structure continues to be used, more winding space and thicker round enameled wire are often required, which will lead to other problems. After the enameled wire becomes thicker, the supporting skeleton must also become larger and thicker to support the wire package. The volume of the entire product also increases, and the cost required is also increased a lot. In addition, the production process becomes more difficult. Utility Model Content

[0004] The utility model aims to provide a flat coil differential mode inductor with a new structure to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new structure flat coil differential mode inductor, including a magnetic core, a coil, and a mounting plate, the magnetic core includes two side columns and two yokes, the side columns and the yokes are square columns, the side walls of the two side columns are provided with embedding grooves for inserting the two yokes, the two side columns and the two yokes are assembled into a rectangular structure, the coil is assembled on the two yokes, the mounting plate is provided with slots for inserting the two side columns, and a plurality of pins are provided at the bottom of the mounting plate.

[0006] Preferably, the side columns and the yokes are made of alloy material, and each of the yokes is interference fit with the embedding groove.

[0007] Preferably, the coil is a flat coil, which is assembled on the yoke after being wound by a mold and fixed by an adhesive.

[0008] Preferably, the mounting plate is made of insulating material, the side column and the slot are inserted in an interference fit, and a pin groove is provided on the mounting plate for the lead wire to pass through and connect with the pin.

[0009] Preferably, the inner wall of the slot is symmetrically provided with abutment block grooves, abutment springs are fixedly provided in the abutment block grooves, and the abutment springs are fixedly connected with abutment blocks for abutting against side columns.

[0010] Preferably, the clamping block is located at one end outside the clamping block groove and the side away from the bottom of the slot is an inclined surface and inclined toward the bottom of the slot. The inner wall of the clamping block groove is symmetrically provided with limiting grooves, and a limiting block fixedly connected to the side wall of the clamping block is slidably provided in the limiting groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: through the arrangement of side columns, yokes and coils, flat coils are more resistant to high temperatures than ordinary round coils, and when the same current passes through them, the volume of the flat coils is smaller. Therefore, under the same winding space as that of ordinary round coils, the current that the flat coils can withstand can be increased. The coils are assembled on the yokes after being wound through a mold and fixed by adhesive, which improves the efficiency of coil winding, and does not require a certain winding space for winding, thereby reducing the size of the structure. The side columns and yokes are alloy square columns, which can be easily produced through molds, reducing production hours and production costs. The square structure formed by splicing has a higher saturation bias current, improves the power usage, and is easy to splice. Through the arrangement of a clamping block, a clamping block groove, a clamping spring, a limit groove and a limit block, the stability of the installation of the magnetic core and the mounting plate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 Schematic diagram of the appearance of this embodiment;

[0014] Figure 2 Schematic diagram of the separation of the yoke and the side column of this embodiment;

[0015] Figure 3 This is a disassembled diagram of the magnetic core and the mounting plate of this embodiment;

[0016] Figure 4 It is a cross-sectional view of the base slot of this embodiment.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Magnetic core; 101. Side column; 102. Magnetic yoke; 2. Coil; 3. Embedded groove; 4. Mounting plate; 5. Slot; 6. Pin; 7. Pin slot; 8. Clamping block; 9. Clamping block slot; 10. Clamping spring; 11. Limiting slot; 12. Limiting block. DETAILED DESCRIPTION

[0019] 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 the embodiments. 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.

[0020] See also Figure 1-4 The utility model provides a technical solution: a new structure flat coil differential mode inductor, including a magnetic core 1, a coil 2, and a mounting plate 4, the magnetic core 1 includes two side columns 101 and two yokes 102, the side columns 101 and the yokes 102 are square columns, the side walls of the two side columns 101 are provided with embedding grooves 3 for inserting the two yokes 102, the two side columns 101 and the two yokes 102 are assembled into a rectangular structure, the coil 2 is assembled on the two yokes 102, the mounting plate 4 is provided with slots 5 for inserting the two side columns 101, and a plurality of pins 6 are provided at the bottom of the mounting plate 4.

[0021] Specifically, the side column 101 and the yoke 102 are made of alloy material, which can be easily produced by using a mold, reducing the production time and cost. Each yoke 102 is interference fit with the embedded groove 3 to ensure that the side column 101 and the yoke 102 are stably spliced. The square structure formed by the splicing has a higher saturation bias current, thereby improving the power usage.

[0022] Specifically, the coil 2 adopts a flat coil. The flat coil is more resistant to high temperature than the ordinary round coil, and the flat coil is smaller in size when the same current passes through it. Therefore, under the same winding space as the ordinary round coil, the current that the flat coil can withstand can be increased. The coil 2 is assembled on the yoke 102 after being wound through a mold and fixed by an adhesive, which improves the efficiency of coil winding. There is no need to provide a certain winding space for winding. After the coil 2 is assembled on the yoke 102, the yoke and the side column 101 can be assembled.

[0023] Specifically, the mounting plate 4 is made of insulating material, and the side column 101 and the slot 5 are inserted in an interference fit, which improves the stability of the installation of the magnetic core 1 and the mounting plate 4. The mounting plate 4 is provided with a pin groove 7 for the lead wire to pass through and connect to the pin 6, which facilitates the connection between the lead wire and the pin 6.

[0024] Specifically, the inner wall of the slot 5 is symmetrically provided with a clamping block groove 9, in which a clamping spring 10 is fixedly provided, and the clamping spring 10 is fixedly connected with a clamping block 8 for clamping the side column 101. The elastic force of the clamping spring 10 makes the clamping block 8 clamp against the side column 101, thereby further improving the installation stability of the magnetic core 1 and the mounting plate 4.

[0025] Specifically, the end of the clamping block 8 located outside the clamping block groove 9 and away from the bottom of the slot 5 is an inclined surface and inclined toward the bottom of the slot 5, which is convenient for the side column 101 to be inserted into the slot 5. When the side column 101 is inserted into the slot 5, the inclined surface of the clamping block 8 is subjected to force to cause the clamping block 8 to compress the clamping spring 10 and slide into the clamping block groove 9. Under the elastic force of the clamping spring 10, the clamping block 8 applies force to the side column 101 in the slot 5, thereby further improving the installation stability of the side column 101 and the slot 5. The inner wall of the clamping block groove 9 is symmetrically provided with a limiting groove 11, and a limiting block 12 fixedly connected to the side wall of the clamping block 8 is slidably provided in the limiting groove 11. The limiting block 12 and the limiting groove 11 are limited to prevent the non-inclined surface of the clamping block 8 from sliding out of the clamping block groove 9 and affecting the installation of the side column 101.

[0026] A specific application example of this embodiment is:

[0027] When the device is in use, the flat enameled wire is wound on the mold and then installed on the yoke 102 and fixed by adhesive, and then the yoke 102 is assembled with the embedded groove 3 on the side column 101, so as to improve the efficiency of coil winding, and there is no need to provide a certain winding space for winding, the yoke 102 and the side column 101 are spliced ​​into a square structure, and the spliced ​​square structure has a higher saturation bias current, which improves the power usage, and the side column 101 is inserted into the slot 5 on the mounting plate 4, and finally the lead of the coil 2 is connected to the pin 6. The flat coil is more resistant to high temperature than the ordinary round coil, and the flat coil is smaller in size when the same current passes through it. Therefore, in the same winding space as the ordinary round coil, the current that the flat coil can withstand can be increased, so that there is no need for a too large structure while ensuring that the coil can withstand an increased current.

[0028] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to the 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 flat coil differential mode inductor with a new structure, comprising a magnetic core (1) and a coil (2), characterized in that: It also comprises a mounting plate (4), the magnetic core (1) comprising two side columns (101) and two magnetic yokes (102), the side columns (101) and the magnetic yokes (102) being square columns, the side walls of the two side columns (101) being provided with embedding grooves (3) for inserting the two magnetic yokes (102), the two side columns (101) and the two magnetic yokes (102) being assembled to form a rectangular structure, the coil (2) being assembled on the two magnetic yokes (102), the mounting plate (4) being provided with slots (5) for inserting the two side columns (101), and a plurality of pins (6) being provided at the bottom of the mounting plate (4).

2. According to claim 1, a novel flat coil differential mode inductor is characterized in that: The side column (101) and the magnetic yoke (102) are made of alloy material, and each magnetic yoke (102) is interference-fitted with the embedding groove (3).

3. The novel flat coil differential mode inductor according to claim 1 is characterized in that: The coil (2) is a flat coil, and the coil (2) is assembled on the yoke (102) after being wound by a mold and fixed by adhesive.

4. The novel flat coil differential mode inductor according to claim 1 is characterized in that: The mounting plate (4) is made of insulating material, the side column (101) is plugged into the slot (5) in an interference fit, and a pin slot (7) is provided on the mounting plate (4) for a lead wire to pass through and connect with a pin (6).

5. The novel flat coil differential mode inductor according to claim 1 is characterized in that: The inner wall of the slot (5) is symmetrically provided with abutment block grooves (9), abutment springs (10) are fixedly arranged in the abutment block grooves (9), and the abutment springs (10) are fixedly connected to abutment blocks (8) for abutting against side columns (101).

6. The novel flat coil differential mode inductor according to claim 5 is characterized in that: The end of the abutting block (8) located outside the abutting block groove (9) and the side away from the bottom of the slot (5) is an inclined surface and is inclined toward the bottom of the slot (5); the inner wall of the abutting block groove (9) is symmetrically provided with a limit groove (11); a limit block (12) fixedly connected to the side wall of the abutting block (8) is slidably provided in the limit groove (11).

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