Novel common mode choke magnetic core

Abstract

The utility model discloses a novel common mode choke magnetic core which comprises a terminal base and a magnetic core body installed in the terminal base, a placing groove is formed in the outer wall of the upper end of the terminal base, electrodes are arranged on the inner wall of the lower end of the placing groove and located at the four corners, the inner wall of the lower end of the terminal base is fixedly connected with a stand column, and the stand column is fixedly connected with the terminal base. A baffle is arranged on the outer wall of the upper end of the magnetic core body, a threaded hole with an upward opening is formed in the outer wall of the upper end of the stand column, and a threaded rod screwed with the threaded hole is fixedly connected to the outer wall of the lower end of the baffle so as to limit the position of the baffle. When the magnetic core is installed, the threaded rod and the threaded hole formed in the stand column can be screwed to limit the position of the baffle, the baffle is located at the upper end of the magnetic core body at the moment, the position of the magnetic core body is limited through screwing limitation of the threaded rod and the threaded hole, and the installation stability of the magnetic core is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to inductor cores, and specifically relates to a novel common-mode inductor core. Background Art

[0002] Common-mode inductor core prefabricated terminals are components used for electromagnetic interference suppression and are widely used in electronic devices such as power supplies and signal processing. The prefabricated terminals facilitate installation and connection, enhancing the efficiency of the inductor. However, when the core is placed in the terminals, there is no device to restrict its position during movement or secure installation. This can easily cause the core to dislodge when the terminals are moved up and down. Utility Model Content

[0003] The purpose of the present invention is to provide a novel common mode inductor core to solve the problem in the background art mentioned above that there is a lack of a device to limit the position of the core when it is placed in a terminal, in terms of movement or installation and fixation.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a novel common-mode inductor magnetic core, comprising a terminal block and a magnetic core body installed inside the terminal block;

[0005] A placement groove is provided inside the outer wall of the upper end of the terminal seat;

[0006] Electrodes are provided on the inner wall of the lower end of the placement tank and at the four corners;

[0007] The inner wall of the lower end of the terminal seat is fixedly connected with a column;

[0008] The upper outer wall of the magnetic core body is provided with a baffle, the upper outer wall of the column is provided with an upwardly open threaded hole, and the lower outer wall of the baffle is fixedly connected with a threaded rod screwed into the threaded hole to limit the position of the baffle.

[0009] Preferably, a thermal pad is fixedly connected to the outer wall of the lower end of the baffle, and a plurality of heat dissipation holes are equidistantly formed on the outer wall of the upper end of the baffle.

[0010] Preferably, an upwardly opening groove is formed on the outer wall of the upper end of the baffle, and a fixing block is fixedly connected to the inner wall of the lower end of the groove.

[0011] Preferably, the thermal pad is made of thermally conductive silicone material, and an adhesive layer is provided at the lower end of the thermal pad.

[0012] Preferably, the baffle is made of brass material, and the transverse length of the baffle is smaller than the transverse length of the magnetic core body.

[0013] Preferably, an upwardly opening limiting groove is provided at the center of the upper outer wall of the terminal seat to limit the placement position of the magnetic core body, and the plurality of electrodes are connected to the terminal seat by coating with structural adhesive.

[0014] Preferably, a total of four electrodes are provided, and the left and right sides of the electrodes are oriented in different directions.

[0015] Compared with the prior art, the present invention provides a new common-mode inductor core with the following beneficial effects:

[0016] By installing the baffle, threaded rod and threaded hole, after the magnetic core body is placed inside the limit groove, the threaded rod and the threaded hole opened in the column can be screwed together to limit the position of the baffle. At this time, the baffle is at the upper end of the magnetic core body. The position of the magnetic core body is restricted by the screwing restriction of the threaded rod and the threaded hole, thereby improving its installation stability and avoiding falling off during use. At the same time, after welding between the coil and the electrode on the magnetic core body, it can avoid the shaking of the magnetic core body and the loosening of the welding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a new common-mode inductor core of the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of a new common-mode inductor core of the utility model.

[0019] Figure 3 This is a schematic diagram of the partial structure of the baffle area in a front view section of the present invention.

[0020] In the figure: 1. Terminal seat; 2. Magnetic core body; 3. Baffle; 4. Heat dissipation hole; 5. Electrode; 6. Placement slot; 7. Limiting slot; 8. Column; 9. Fixing block; 10. Thermal pad; 11. Threaded hole; 12. Threaded rod; 13. Groove. 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] The utility model provides Figure 1-3 A novel common-mode inductor magnetic core shown includes a terminal base 1 and a magnetic core body 2 installed inside the terminal base 1;

[0023] A placement slot 6 is provided inside the upper outer wall of the terminal block 1;

[0024] Electrodes 5 are provided on the inner wall of the lower end of the placement tank 6 and at the four corners;

[0025] The inner wall of the lower end of the terminal seat 1 is fixedly connected with a column 8. During the assembly and use of the common-mode inductor core, first, the reserved surfaces of the four electrodes 5 are coated with structural glue, and the electrodes 5 are attached to the reserved positions on the terminal seat 1, pressed, shaped and baked to form, and then a coil of a specified number of turns is wound on the magnetic core body 2, and then it is placed in the placement slot 6, and then placed in the terminal seat 1. After the coils wound on the magnetic core body 2 are welded to the electrodes 5 respectively, it can be used subsequently;

[0026] A baffle 3 is provided on the upper outer wall of the magnetic core body 2, and a threaded hole 11 opening upward is provided on the upper outer wall of the column 8. The lower outer wall of the baffle 3 is fixedly connected with a threaded rod 12 screwed into the threaded hole 11 to limit the position of the baffle 3. After the installation of the magnetic core body 2 is completed, the baffle 3 can be moved to the upper side of the magnetic core body 2, and then the threaded rod 12 at the lower end of the baffle 3 is screwed into the threaded hole 11 on the column 8 to limit the position of the magnetic core body 2.

[0027] like Figure 1 and Figure 3 As shown, the lower outer wall of the baffle 3 is fixedly connected to a thermal pad 10, the upper outer wall of the baffle 3 is equidistantly provided with a plurality of heat dissipation holes 4, the upper outer wall of the baffle 3 is provided with an upwardly opening groove 13, and the lower inner wall of the groove 13 is fixedly connected to a fixing block 9.

[0028] When the magnetic core body 2 is working, the heat generated can be guided by the thermal pad 10, and the heat generated by the magnetic core body 2 during operation can be assisted in heat dissipation through the heat dissipation holes 4 opened on the baffle 3, thereby reducing the temperature generated by the magnetic core body 2 during operation. When the baffle 3 needs to be removed, the fixing block 9 can be pinched with the fingers and rotated counterclockwise to remove the baffle 3.

[0029] like Figure 1 and Figure 3 As shown, the thermal pad 10 is made of thermally conductive silicone material, an adhesive layer is provided at the lower end of the thermal pad 10 , the baffle 3 is made of brass material, and the transverse length of the baffle 3 is smaller than the transverse length of the magnetic core body 2 .

[0030] The thermal pad 10 made of thermally conductive silicone material can fit tightly to the width of the coil wound on the magnetic core body 2, increasing the heat contact area, thereby accelerating the heat dissipation speed, and the adhesive layer set at the lower end can fit perfectly with the coil to avoid the situation where there is no contact and heat cannot be effectively transferred. The baffle 3 made of brass material can quickly diffuse the heat into the air.

[0031] like Figure 1 As shown, an upward-opening limit groove 7 is provided inside the center of the upper outer wall of the terminal seat 1 to limit the placement position of the magnetic core body 2. Multiple electrodes 5 are connected to the terminal seat 1 by coating with structural adhesive. There are four electrodes 5 in total, and the left and right sides of the multiple electrodes 5 have different orientations.

[0032] When placing the magnetic core body 2, it can be placed in the limit groove 7 opened at the upper end of the terminal seat 1 to limit the position of the lateral swing space. The electrode 5 is connected to the terminal seat 1 using structural glue, so that the electrode 5 can be placed in different positions according to needs, which is convenient for subsequent circuit connection.

[0033] The implementation principle of this embodiment is as follows: during the assembly and use of the common-mode inductor core, first, structural adhesive is coated on the reserved surfaces of the four electrodes 5, and the electrodes 5 are attached to the reserved positions on the terminal seat 1, and pressed, shaped and baked to form. Then, a coil of a specified number of turns is wound on the core body 2, and then it is placed in the placement slot 6, and then placed in the terminal seat 1. The coils wound on the core body 2 are welded to the electrodes 5 respectively before subsequent use. After the core body 2 is installed, the baffle 3 can be moved to the upper side of the core body 2, and then the threaded rod 12 at the lower end of the baffle 3 is screwed into the threaded hole 11 on the column 8 to limit the position of the core body 2.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel common-mode inductor magnetic core, comprising a terminal base (1) and a magnetic core body (2) mounted inside the terminal base (1); A placement groove (6) is provided inside the upper outer wall of the terminal seat (1); Electrodes (5) are provided on the inner wall of the lower end of the placement groove (6) and at the four corners; A column (8) is fixedly connected to the inner wall of the lower end of the terminal seat (1); Its characteristics are: The upper outer wall of the magnetic core body (2) is provided with a baffle (3), the upper outer wall of the column (8) is provided with an upwardly opening threaded hole (11), and the lower outer wall of the baffle (3) is fixedly connected with a threaded rod (12) screwed into the threaded hole (11) to limit the position of the baffle (3).

2. The novel common-mode inductor core according to claim 1, characterized in that: A heat-conducting pad (10) is fixedly connected to the outer wall of the lower end of the baffle (3), and a plurality of heat-dissipating holes (4) are equidistantly formed on the outer wall of the upper end of the baffle (3).

3. The novel common-mode inductor core according to claim 1, characterized in that: An upwardly opening groove (13) is provided on the upper outer wall of the baffle (3), and a fixing block (9) is fixedly connected to the lower inner wall of the groove (13).

4. The novel common-mode inductor core according to claim 2, characterized in that: The thermal pad (10) is made of a thermally conductive silicone material, and an adhesive layer is provided at the lower end of the thermal pad (10).

5. The novel common-mode inductor core according to claim 1, characterized in that: The baffle (3) is made of brass material, and the transverse length of the baffle (3) is smaller than the transverse length of the magnetic core body (2).

6. The novel common-mode inductor core according to claim 1, characterized in that: An upwardly opening limiting groove (7) is provided at the center of the upper outer wall of the terminal seat (1) to limit the placement position of the magnetic core body (2), and the plurality of electrodes (5) are connected to the terminal seat (1) by coating with structural adhesive.

7. The novel common-mode inductor core according to claim 1, characterized in that: A total of four of the plurality of electrodes (5) are provided, and the left and right sides of the plurality of electrodes (5) have different orientations.

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