An easy-to-install common-mode inductor

Abstract

This application relates to the technical field of common mode inductors, and in particular to a common mode inductor that is easy to install, comprising a base and two housings. A positioning pin is fixedly connected to the bottom surface of the base. A connecting plate is slidably connected to the inner wall of each housing. A locking block is fixedly connected to the side of each connecting plate that is close to each other. The positioning pin is installed on the bottom surface of the base. When the base needs to be installed, moving the base moves the positioning pin, which contacts the inclined surface of the locking block, causing the locking block to move relative to the connecting plate. This allows the sliding block to move within the sliding groove, compressing the spring. When the positioning pin is installed in place, the connecting plate resets under the action of the spring, which in turn resets the locking block, locking the positioning pin. This allows the device to facilitate quick installation of the coil, enabling one-button press-to-installation. Furthermore, the connection between the positioning pin and the locking block effectively prevents the coil from moving and falling off during application.

Description

Technical Field

[0001] This application relates to the technical field of common mode inductors, and in particular to a common mode inductor that is easy to install. Background Technology

[0002] Common mode inductors, also known as common mode chokes, are commonly used in computer switching power supplies to filter common mode electromagnetic interference signals. In circuit board design, common mode inductors also serve as EMI filters, used to suppress the outward radiation of electromagnetic waves generated by high-speed signal lines. With the improvement of people's living standards and the continuous development of technology, common mode inductors have been widely used and have become an indispensable device in many industries.

[0003] A search revealed Chinese Patent Publication No. CN218602235U, which discloses a horizontal common-mode inductor base, comprising: a base body with a magnetic core and two sets of coils mounted thereon; the magnetic core has a square central hole with rounded corners at all four corners; the two sets of coils pass through the central hole and are wound around the two opposite long sides of the magnetic core; a baffle assembly located on the base body and inserted into the central hole; the baffle assembly includes a first baffle, a second baffle, and a third baffle; the second baffle is positioned between the first and third baffles; the first and third baffles are parallel to the short sides of the magnetic core; the second baffle is perpendicular to the first and third baffles; and the portion of the coil passing through the central hole is located between the first and third baffles. The base body has a insertion hole for mounting pins, and the end of the coil is connected to the pin. This invention prevents the coil from contacting the rounded corners of the magnetic core, ensuring the stability of the magnetic core and thus preventing short circuits in the device.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: In the above solutions, the base lacks a positioning effect when installing common-mode inductors, making installation inconvenient and prone to causing the product to move and fall off during application. To address this issue, this application incorporates components such as a positioning pin, a locking block, and a spring. The base's movement allows the positioning pin to push the locking block open, and the spring then resets the locking block, connecting it to the groove on the positioning pin surface for one-click installation. Furthermore, the connection between the positioning pin and the locking block effectively prevents the coil from moving and falling off during application. Utility Model Content

[0005] To enable quick installation while providing a positioning effect on the base to prevent the coil from moving or falling off during application, this application provides a common-mode inductor that is easy to install.

[0006] This application provides an easy-to-install common-mode inductor, employing the following technical solution: It includes a base and two housings. A positioning pin is fixedly connected to the bottom surface of the base. A connecting plate is slidably connected to the inner wall of each housing. A locking block is fixedly connected to the side of each connecting plate that is close to each other. Two springs are fixedly connected to the side of each connecting plate that is far from each other. The other end of each spring is fixedly connected to the inner side wall of the corresponding housing. A sliding groove is formed on the bottom surface of each housing. A sliding block is slidably connected to the inner wall of each sliding groove. The outer surface of each sliding block is fixedly connected to the side of the corresponding connecting plate that is far from each other.

[0007] Optionally, each of the positioning pins has a mounting shell slidably connected to its outer surface, and a guide post slidably connected to the inner wall of the mounting shell.

[0008] Optionally, a limiting post is fixedly connected to the inner bottom wall of the mounting shell, and a gear is rotatably connected to the outer surface of the limiting post.

[0009] Optionally, the outer surface of the gear meshes with two racks, rack one and rack two, and the upper surface of each rack one is fixedly connected to the bottom surface of the corresponding sliding block.

[0010] Optionally, a limiting component is fixedly connected to the outer surface of the guide post, and the back side of the guide post is fixedly connected to the front side of the rack.

[0011] Optionally, the upper surface of the base is provided with an epoxy resin layer, and the outer surface of the base is fixedly connected with connectors arranged at equal intervals.

[0012] Optionally, a common mode inductor body is disposed on the upper surface of the epoxy resin layer, and Nomex tape is disposed on the upper surface of the common mode inductor body.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This utility model incorporates components such as a positioning pin, a connecting plate, a locking block, a spring, and a sliding block. The positioning pin is installed on the bottom surface of the base. When the base needs to be installed, moving the base moves the positioning pin, which then contacts the inclined surface of the locking block. This causes the locking block to move relative to the connecting plate, allowing the sliding block to move within the sliding groove. At this time, the spring is compressed. When the positioning pin is in place, the spring causes the connecting plate to reset, which in turn resets the locking block, locking the positioning pin in place. This allows for quick and easy installation of the coil, enabling one-button press-to-installation. Furthermore, the connection between the positioning pin and the locking block effectively prevents the coil from moving or falling off during application.

[0015] 2. This utility model incorporates components such as rack one, gear, guide post, limiting member, and rack two. The limiting post is fixed to the inner bottom wall of the mounting housing, and the gear is mounted on the surface of the limiting post, forming a rotatable connection. When the base needs to be disassembled, pressing the guide post causes the gear to rotate. This rotation allows the two racks to move in opposite directions, which in turn moves the two sliding blocks relative to each other. The sliding blocks then move the connecting plate and the locking block, allowing the base to be removed. Releasing the guide post causes it to quickly return to its original position under the action of a spring. The limiting member prevents the guide post from popping out, enabling one-button disassembly. This allows for both quick installation and convenient disassembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure in the embodiments of this application;

[0017] Figure 2 This is a schematic diagram of the structure of the main view in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the connection relationship between the common mode inductor body and the epoxy resin layer in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the connection relationship between the gear and the rack in an embodiment of this application.

[0020] Reference numerals in the attached drawings: 1. Base; 2. Positioning pin; 3. Housing; 4. Connecting plate; 5. Locking block; 6. Spring; 7. Sliding groove; 8. Sliding block; 9. Rack one; 10. Gear; 11. Limiting post; 12. Mounting shell; 13. Guide post; 14. Limiting component; 15. Rack two; 16. Epoxy resin layer; 17. Connecting component; 18. Common mode inductor body; 19. Nomex tape. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0022] This application discloses a common-mode inductor that is easy to install. For example... Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the device includes a base 1 and two housings 3. A positioning pin 2 is fixedly connected to the bottom surface of the base 1. The positioning pin 2 is installed on the bottom surface of the base 1 to achieve the positioning and installation effect of the positioning pin 2. The positioning pin 2 can move with the base 1. A connecting plate 4 is slidably connected to the inner wall of each housing 3. The connecting plate 4 is installed on the inner wall of the housing 3 to achieve the limiting of the connecting plate 4. A locking block 5 is fixedly connected to the side of each connecting plate 4 that is close to each other. The locking block 5 is installed on the side of the connecting plate 4 that is close to each other, and the surface of the locking block 5 has a bevel. At the same time, the surface of the positioning pin 2 has two grooves that are adapted to the locking block 5. When the positioning pin 2 descends, the locking block 5 can be pushed open by the bevel of the locking block 5, and then the locking block 5 can fall into the groove on the surface of the positioning pin 2 to lock the positioning pin 2.

[0023] like Figure 4 As shown, two springs 6 are fixedly connected to the opposite sides of each connecting plate 4. The springs 6 are installed on the opposite sides of the corresponding connecting plates 4 to form a fixed connection. The other end of each spring 6 is fixedly connected to the inner wall of the corresponding housing 3 to limit the movement of the spring 6. The springs 6 can press the connecting plate 4 tightly, thereby pressing the locking block 5 tightly to prevent the locking block 5 from falling off.

[0024] In this embodiment, each housing 3 has a sliding groove 7 on its bottom surface. The sliding groove 7 is positioned on the bottom surface of the housing 3. A sliding block 8 is slidably connected to the inner wall of each sliding groove 7. The sliding block 8 is installed on the inner wall of the corresponding sliding groove 7 to form a sliding connection. The sliding block 8 can be limited by the contour of the sliding groove 7. The outer surface of each sliding block 8 is fixedly connected to the side of the corresponding connecting plate 4 that is away from each other. The outer surface of the sliding block 8 is connected to the connecting plate 4. The sliding groove 7 limits the sliding block 8, thereby limiting the connecting plate 4.

[0025] In a preferred embodiment, a mounting shell 12 is slidably connected to the outer surface of each positioning pin 2. The mounting shell 12 is positioned below the positioning pin 2. A through hole adapted to the positioning pin 2 is opened on the upper surface of the mounting shell 12, so that the positioning pin 2 can be installed through the through hole. A guide post 13 is slidably connected to the inner wall of the mounting shell 12. The guide post 13 is installed on the inner wall of the mounting shell 12 and is set as a sliding connection. The mounting shell 12 is used to limit the positioning of the guide post 13.

[0026] Looking back Figure 4A limiting post 11 is fixedly connected to the inner bottom wall of the mounting shell 12. The limiting post 11 is installed on the inner bottom wall of the mounting shell 12 and is set as a fixed connection to achieve the positioning and installation effect of the limiting post 11. A gear 10 is rotatably connected to the outer surface of the limiting post 11. The gear 10 is installed on the surface of the limiting post 11 and is set as a rotatable connection to achieve the limiting of the gear 10 through the limiting post 11.

[0027] In this embodiment, two racks 19 and 25 mesh on the outer surface of the gear 10. The two racks 19 and 25 are arranged on the outside of the gear 10 and connected to each other. By rotating the gear 10, the two racks 19 and 25 can move, and the two racks 19 move in opposite directions. The upper surface of each rack 19 is fixedly connected to the bottom surface of the corresponding sliding block 8. The upper surface of the rack 19 is fixedly connected to the sliding block 8. When the gear 10 rotates, the two sliding blocks 8 can move relative to each other, thereby driving the corresponding connecting plate 4 and the locking block 5 to move.

[0028] In a preferred embodiment, a limiting member 14 is fixedly connected to the outer surface of the guide post 13. The limiting member 14 is installed on the outer surface of the guide post 13 and is fixedly connected. The front side of the limiting member 14 is in contact with the inner sidewall of the mounting shell 12, which can limit the guide post 13. The back side of the guide post 13 is fixedly connected to the front side of the rack 15. By connecting the back side of the guide post 13 to the rack 15, the rack 15 can be moved by pressing the guide post 13, thereby driving the gear 10 to rotate, and thus the two racks 9 can move relative to each other.

[0029] Combination Figure 1 and Figure 3 An epoxy resin layer 16 is provided on the upper surface of the base 1. The epoxy resin layer 16 is coated on the upper surface of the base 1. The epoxy resin layer 16 is mainly composed of epoxy resin and curing agent. It forms a strong adhesive layer through chemical reaction. The outer surface of the base 1 is fixedly connected with connectors 17 arranged at equal intervals. The connectors 17 are installed on the outer surface of the base 1. Four connectors 17 are provided. The pins of the common mode inductor surface winding can be connected through the connectors 17.

[0030] In this embodiment, a common mode inductor body 18 is disposed on the upper surface of the epoxy resin layer 16. The common mode inductor body 18 is disposed on the upper surface of the epoxy resin layer 16, and the epoxy resin layer 16 can bond the common mode inductor body 18 to the base 1. The surface of the common mode inductor body 18 is wound with windings. Nomex tape 19 is disposed on the upper surface of the common mode inductor body 18. The Nomex tape 19 is disposed on the upper surface of the common mode inductor body 18 and is used for product SMT pick-up. Nomex tape 19 is a tape with Nomex fiber as the base material, which has the characteristics of high temperature, wear resistance, and chemical corrosion resistance.

[0031] The implementation principle of the common mode inductor that is easy to install according to the embodiments of this application is as follows: During use, the common mode inductor body 18 with windings is placed in the base 1 and fixed by the epoxy resin layer 16. Then, Nomex tape 19 is attached to the upper surface of the common mode inductor body 18 for use when picking up products in SMT. During installation, the base 1 is moved to drive the positioning pin 2 to connect with the through hole of the mounting shell 12. The positioning pin 2 contacts the inclined surface of the card block 5, so that the card block 5 drives the connecting plate 4 to move, so that the sliding block 8 can move inside the sliding groove 7. At this time, the spring 6 is compressed. After the positioning pin 2 is installed in place... Under the action of spring 6, the connecting plate 4 and the locking block 5 are reset, and the positioning pin 2 can be locked, realizing one-click installation. The connection between the positioning pin 2 and the locking block 5 effectively prevents the coil from moving and falling off during application. When disassembly is required, press the guide post 13 to make the gear 10 rotate. The rotation of the gear 10 causes the two racks 9 to drive the two sliding blocks 8 to move relative to each other. The sliding blocks 8 drive the connecting plate 4 and the locking block 5 to move. At this time, the base 1 can be removed. Then, release the guide post 13. Under the action of spring 6, the guide post 13 is quickly reset, realizing one-click disassembly.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A common-mode inductor that is easy to install, comprising a base (1) and two housings (3), characterized in that: The bottom surface of the base (1) is fixedly connected with a positioning pin (2). Each inner wall of the housing (3) is slidably connected with a connecting plate (4). Each connecting plate (4) has a locking block (5) fixedly connected to the side of each connecting plate (4) that is close to each other. Each connecting plate (4) has two springs (6) fixedly connected to the side of each connecting plate (4) that is far from each other. The other end of each spring (6) is fixedly connected to the inner side wall of the corresponding housing (3). Each bottom surface of the housing (3) is provided with a sliding groove (7). Each sliding groove (7) has a sliding block (8) slidably connected to the inner wall of each sliding groove (7). The outer surface of each sliding block (8) is fixedly connected to the side of the corresponding connecting plate (4) that is far from each other.

2. The common-mode inductor for easy installation according to claim 1, characterized in that: Each of the positioning pins (2) has a mounting shell (12) slidably connected to its outer surface, and a guide post (13) slidably connected to the inner wall of the mounting shell (12).

3. The common-mode inductor for easy installation according to claim 2, characterized in that: The inner bottom wall of the mounting shell (12) is fixedly connected to a limiting post (11), and a gear (10) is rotatably connected to the outer surface of the limiting post (11).

4. The common-mode inductor for easy installation according to claim 3, characterized in that: The outer surface of the gear (10) meshes with two racks, one (9) and two racks (15), and the upper surface of each rack (9) is fixedly connected to the bottom surface of the corresponding sliding block (8).

5. A common-mode inductor that is easy to install according to claim 4, characterized in that: The guide post (13) is fixedly connected to the outer surface of the limiting member (14), and the back of the guide post (13) is fixedly connected to the front of the rack (15).

6. The common-mode inductor for easy installation according to claim 1, characterized in that: An epoxy resin layer (16) is provided on the upper surface of the base (1), and connectors (17) arranged at equal intervals are fixedly connected to the outer surface of the base (1).

7. A common-mode inductor that is easy to install according to claim 6, characterized in that: The upper surface of the epoxy resin layer (16) is provided with a common mode inductor body (18), and the upper surface of the common mode inductor body (18) is provided with Nomex tape (19).

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