A common mode inductor

Abstract

The utility model relates to the field of inductor, and disclose a common mode inductor, including the fixed frame, the inside installation of fixed frame has the positioning assembly, the top of fixed frame is installed with the protection subassembly, the positioning assembly includes two winding columns, two the winding column is installed in the inboard of fixed frame, the outside winding of winding column has the coil, the bottom of winding column is fixedly installed with the pin evenly in both ends, the both ends of winding column are fixedly installed with the locating plate, the outside of locating plate is equipped with the locating hole, the both sides inner wall of fixed frame all are equipped with two locating grooves, all are equipped with two screw holes in the both sides outer wall of fixed frame, the inside junction of screw hole has the bolt. Through locating plate, strengthen the fixing of winding column, the dismounting and replacement of winding column are convenient, through the protection cover, improve the protection and heat dissipation in the inside, the dismounting and overhaul in the inside of protection cover are convenient.

Description

Technical Field

[0001] This utility model relates to the field of inductors, specifically a common-mode inductor. Background Technology

[0002] A common-mode inductor is an inductive element primarily used to suppress common-mode noise. It is typically used in differential signal lines, such as in the differential lines of twisted pairs, coaxial cables, or printed circuit boards. A common-mode inductor usually consists of several identical coils wound on a common magnetic core.

[0003] The publication number CN210245209U provides a common mode inductor, including a magnetic core and two coils wound on the magnetic core. The magnetic core has a closed frame structure, and the two coils are arranged side by side on both sides of the magnetic core with opposite winding directions.

[0004] The aforementioned common-mode inductor improves the stability of common-mode inductor installation. However, during installation, the winding post and the mounting bracket are integrated, making it inconvenient to disassemble and replace if the coil is damaged. Furthermore, external electronic components are easily accessible, reducing the protection of the coil. Utility Model Content

[0005] The purpose of this invention is to provide a common-mode inductor to solve the technical problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A common-mode inductor includes a mounting frame, a positioning assembly installed inside the mounting frame, a protective assembly installed on the top of the mounting frame, and two winding posts installed inside the mounting frame. A coil is wound around the outside of each winding post. Pins are fixedly installed at both ends of the bottom of each winding post. Positioning plates are fixedly installed at both ends of each winding post. Positioning holes are provided on the outer sides of the positioning plates. Two positioning grooves are provided on the inner walls of both sides of the mounting frame, and two screw holes are provided through the outer walls of both sides of the mounting frame. Bolts are connected to the interior of the screw holes.

[0007] Preferably, the two winding posts are symmetrically installed, with each end of the coil connected to a pin, and the four pins at the bottom of the two winding posts used for connecting the circuit.

[0008] Preferably, the positioning plate is rectangular and is snap-fitted into the positioning groove. The positioning plate slides into the positioning groove for assembly and disassembly around the column.

[0009] Preferably, the bolt is located in the screw hole and is threaded, and the inner end of the bolt is engaged with the positioning hole.

[0010] Preferably, the protective component includes a protective cover, which is installed on the top of the fixing frame. Several heat dissipation holes are opened through the outside of the protective cover. The fixing frame has slots on both sides, and the protective cover has a card plate fixedly connected to both sides. A card block is fixedly installed on the inner side of the card plate near the bottom.

[0011] Preferably, the protective cover covers the top of the fixing frame and matches each other, and the positions of several heat dissipation holes correspond to the two winding columns respectively.

[0012] Preferably, the card block and the card slot are arranged in a triangular shape, and the card block and the card slot are engaged.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1) This common mode inductor, by setting a positioning component, the positioning plate is inserted into the positioning groove, and the bolt slides inward through the thread and engages with the positioning hole. The positioning plate enhances the fixation of the winding column and facilitates the disassembly and replacement of the winding column.

[0014] 2) This common mode inductor, by setting up a protective component, has a protective cover installed on the top of the mounting bracket, and a locking block inserted into the slot. Through the protective cover and heat dissipation holes, the internal protection and heat dissipation are improved. The locking block facilitates the disassembly and assembly of the protective cover and internal maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a common-mode inductor according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the positioning component in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the protective component in an embodiment of the present utility model; Figure 4 This is a side view of the overall embodiment of this utility model.

[0016] In the diagram: 1. Fixing frame; 2. Positioning component; 3. Protective component; 4. Winding column; 5. Coil; 6. Pin; 7. Positioning plate; 8. Positioning hole; 9. Positioning groove; 10. Screw hole; 11. Bolt; 12. Protective cover; 13. Heat dissipation hole; 14. Slot; 15. Card plate; 16. Card block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1 Combination Figures 1-4 A common-mode inductor includes a mounting bracket 1, a positioning component 2 installed inside the mounting bracket 1, and a protective component 3 installed on the top of the mounting bracket 1.

[0019] See Figure 2 Furthermore, the positioning component 2 includes two winding posts 4, which are installed on the inner side of the fixing frame 1. A coil 5 is wound around the outside of the winding posts 4. Pins 6 are fixedly installed at both ends of the bottom of the winding posts 4. Positioning plates 7 are fixedly installed at both ends of the winding posts 4. Positioning holes 8 are opened on the outer side of the positioning plates 7. Two positioning grooves 9 are opened on both sides of the inner wall of the fixing frame 1. Two screw holes 10 are opened through both sides of the outer wall of the fixing frame 1. Bolts 11 are connected inside the screw holes 10.

[0020] The two winding posts 4 are symmetrically installed. The two ends of the coil 5 are connected to two pins 6 respectively. The four pins 6 at the bottom of the two winding posts 4 are used to connect the circuit. The two pins 6 are electrically connected to the two ends of the coil 5.

[0021] The positioning plate 7 is rectangular and is located in the positioning groove 9 in a snap-fit ​​configuration. The positioning plate 7 slides into the positioning groove 9 for the assembly and disassembly of the winding post 4. The winding post 4 is prevented from rotating by the positioning plate 7, so that the pin 6 is perpendicular.

[0022] Bolt 11 is located in the screw hole 10 and is threaded. The inner end of bolt 11 is engaged with the positioning hole 8. Bolt 11 slides inward through the thread and is engaged into the positioning hole 8 to enhance the fixation of the post 4.

[0023] Specifically, the positioning plate 7 slides into the positioning groove 9, and the bolt 11 slides inward into the positioning hole 8 to strengthen the fixation of the winding post 4, so as to facilitate the disassembly and replacement of the winding post 4.

[0024] Example 2 See Figure 3 Furthermore, based on Embodiment 1, the protective component 3 includes a protective cover 12, which is installed on the top of the fixing frame 1. Several heat dissipation holes 13 are opened through the outside of the protective cover 12. Slots 14 are opened on both sides of the fixing frame 1. Card plates 15 are fixedly connected to both sides of the protective cover 12. Card blocks 16 are fixedly installed on the inner side of the card plate 15 near the bottom.

[0025] The protective cover 12 covers the top of the fixing frame 1 and matches each other. The positions of several heat dissipation holes 13 correspond to the two winding posts 4 respectively. The protective cover 12 is used to improve the protection of the winding posts 4, and the heat dissipation holes 13 are used to dissipate heat from the coil 5.

[0026] The locking block 16 and the locking slot 14 are arranged in a triangle and are engaged with each other. The locking plate 15 and the protective cover 12 are softly connected. By pressing the top of the locking plate 15 inward, the bottom end pops outward, so as to facilitate the installation and removal of the protective cover 12.

[0027] Specifically, the locking block 16 is inserted into the slot 14 to fix the protective cover 12. The protective cover 12 and the heat dissipation hole 13 improve the protection and heat dissipation of the winding column 4. The locking block 16 is disengaged from the slot 14 by pressing the locking plate 15 inward, which facilitates the disassembly and assembly of the protective cover 12 and makes internal maintenance convenient.

[0028] In actual operation, the coil 5 is wound around the outside of the winding post 4, the pin 6 is used to connect the circuit, and it is fixed by the positioning plate 7. The protective cover 12 is installed on the top of the fixing frame 1 to provide protection. When disassembling and fixing, the coil 5 is wound around the outside of the winding post 4, and the two ends of the coil 5 are soldered to the two pins 6 respectively. The positioning plate 7 slides into the positioning groove 9, and the bolt 11 slides inward through the thread of the screw hole 10 and engages with the positioning hole 8, thereby fixing the winding post 4 so as to facilitate the disassembly, assembly and replacement of the winding post 4. When providing protection, the protective cover 12 is installed on the top of the fixing frame 1, and the locking block 16 is locked into the locking slot 14 for fixation. The protective cover 12 improves the protection of the two winding posts 4. The heat dissipation hole 13 is used for heat dissipation of the internal coil 5. By pressing the top of the locking plate 15 inward, the bottom end of the locking plate 15 pops outward and disengages from the locking slot 14, which facilitates the disassembly and assembly of the protective cover 12 and facilitates internal maintenance.

[0029] By setting the positioning component 2, the positioning plate 7 is inserted into the positioning groove 9, and the bolt 11 slides inward through the thread and engages with the positioning hole 8. The positioning plate 7 enhances the fixation of the winding column 4 and facilitates the disassembly and replacement of the winding column 4. By setting the protective component 3, the protective cover 12 is installed on the top of the fixing frame 1, and the locking block 16 is inserted into the locking groove 14. The protective cover 12 and the heat dissipation hole 13 improve the internal protection and heat dissipation. The locking block 16 facilitates the disassembly and assembly of the protective cover 12 and internal maintenance.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can 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 common-mode inductor, comprising a mounting bracket (1), characterized in that: The fixing frame (1) is equipped with a positioning component (2) inside and a protective component (3) is installed on the top of the fixing frame (1). The positioning component (2) includes two winding posts (4), which are installed on the inner side of the fixing frame (1). The outer side of the winding posts (4) is wound with coils (5). The bottom of the winding posts (4) is fixedly installed with pins (6) at both ends. The two ends of the winding posts (4) are fixedly installed with positioning plates (7). The outer side of the positioning plates (7) is provided with positioning holes (8). The inner walls of both sides of the fixing frame (1) are provided with two positioning grooves (9). The outer walls of both sides of the fixing frame (1) are provided with two screw holes (10). The screw holes (10) are connected with bolts (11).

2. A common-mode inductor according to claim 1, characterized in that: The two winding posts (4) are symmetrically installed between each other. The two ends of the coil (5) are connected to two pins (6) respectively. The four pins (6) at the bottom of the two winding posts (4) are used to connect the circuit.

3. A common-mode inductor according to claim 1, characterized in that: The positioning plate (7) is rectangular in shape and is located in the positioning groove (9) in a snap-fit ​​configuration. The positioning plate (7) slides into the positioning groove (9) for the assembly and disassembly of the column (4).

4. A common-mode inductor according to claim 1, characterized in that: The bolt (11) is located in the screw hole (10) and is threaded. The inner end of the bolt (11) is engaged with the positioning hole (8).

5. A common-mode inductor according to claim 1, characterized in that: The protective component (3) includes a protective cover (12), which is installed on the top of the fixed frame (1). Several heat dissipation holes (13) are opened through the outside of the protective cover (12). The fixed frame (1) has slots (14) on both sides. The protective cover (12) is fixedly connected to both sides with a card plate (15). A card block (16) is fixedly installed on the bottom side of the inner side of the card plate (15).

6. A common-mode inductor according to claim 5, characterized in that: The protective cover (12) covers the top of the fixed frame (1) and matches each other, and the positions of several heat dissipation holes (13) correspond to the two winding columns (4) respectively.

7. A common-mode inductor according to claim 5, characterized in that: The card block (16) and the card slot (14) are arranged in a triangle, and the card block (16) and the card slot (14) are connected by a snap.

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