A horizontal common mode filter

Abstract

This utility model relates to the field of electronic component technology, and more particularly to a horizontal common-mode filter, comprising a base, a coil, and a housing. The base is disc-shaped with pin sockets on both opposite sides. Four through holes are provided on the base near the pin sockets on both sides. The coil can be placed inside the base, and the coil leads can pass through the through holes and be wound around the pin sockets. The housing is fitted onto the base to shield the coil, and slots are formed on opposite sides of the housing to accommodate the pin sockets. This utility model's horizontal common-mode filter uses a combination of a horizontal base, coil, and housing. The design of the pin sockets and through holes facilitates the connection and fixation of the leads, improving the reliability of the electrical connection. Furthermore, the wound lead connection method enables SMT production assembly, greatly improving production efficiency. The fit between the housing and the base not only facilitates assembly but also effectively protects internal components. The slotted design facilitates the lead-out of the pin sockets, simplifying the installation process.

Description

Technical Field

[0001] This utility model relates to the field of electronic components technology, and in particular to a horizontal common-mode filter. Background Technology

[0002] In electronic devices, common-mode filters are key components for suppressing electromagnetic interference, and their performance directly affects the electromagnetic compatibility of the device. Traditional common-mode filters mostly adopt a through-hole structure, which has many problems in practical applications. For example, during installation, large holes need to be reserved on the circuit board, which not only limits the layout flexibility of the circuit board, but may also lead to unstable connection between the filter and the circuit board, especially when the device is subjected to vibration or impact, which can easily result in poor contact. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a horizontal common-mode filter, including a base, a coil, and a housing. The base is disc-shaped and has pin sockets on both opposite sides. Four through holes are provided on the two sides of the base near the pin sockets. The coil can be placed inside the base, and the lead end of the coil can pass through the through holes and be wound around the pin sockets. The housing is fitted onto the base to cover the coil, and slots are formed on opposite sides of the housing to accommodate the pin sockets.

[0004] In some possible embodiments, the pin holder is cylindrical and integrally formed with the base.

[0005] In some possible embodiments, an isolation post is formed on the base at a position between the two through holes.

[0006] In some possible embodiments, the opening length of the two through holes on one side of the base is greater than the opening length of the two through holes on the other side.

[0007] In some possible embodiments, an annular positioning barrier is formed on the outer side of the base, and both the coil and the housing are installed within the annular positioning barrier.

[0008] Compared to existing technologies, the advantages of this invention are as follows: This horizontal common-mode filter, through its innovative structural design, abandons the traditional through-hole structure and adopts a combination of a horizontal base, coil, and housing. The design of the pin socket and through-holes facilitates the connection and fixation of the lead ends, improving the reliability of the electrical connection. Furthermore, the wound lead end connection method enables SMT production assembly, greatly improving production efficiency. The fit between the housing and the base not only facilitates assembly but also effectively protects internal components, while the slotted design facilitates the lead-out of the pin socket, simplifying the installation process. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A three-dimensional structural diagram of a horizontal common-mode filter provided in an embodiment of this utility model;

[0011] Figure 2 A three-dimensional assembly drawing of a horizontal common-mode filter provided for an embodiment of this utility model;

[0012] Figure 3 A cross-sectional view of the horizontal common-mode filter provided in an embodiment of this utility model.

[0013] Reference numerals: base 1, pin socket 11, through hole 12, isolation post 13, annular positioning barrier 14, coil 2, lead end 21, outer shell 3, slot 31. Detailed Implementation

[0014] 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.

[0015] like Figures 1 to 3 The horizontal common-mode filter shown includes a base 1, a coil 2, and a housing 3. The base 1 is disc-shaped with pin headers 11 on both opposite sides. The pin headers 11 are used for connecting and fixing lead ends 21. Four through holes 12 are provided on the base 1 near the pin headers 11 on both sides. The coil 2 can be placed inside the base 1, and the lead ends 21 of the coil 2 can pass through the through holes 12 and be wound around the pin headers 11. This lead end connection method is not only simple to operate but also provides a strong and reliable connection, effectively reducing problems such as poor soldering or contact. It also meets the requirements of SMT assembly operations, enabling mass SMT assembly and greatly improving production assembly efficiency. The housing 3 covers the base 1 to shield the coil 2. Slots 31 are formed on opposite sides of the housing 3 to accommodate the pin headers 11. The slots 31 facilitate the lead-out of the pin headers 11, simplifying the filter installation process and facilitating heat dissipation during operation, ensuring stable operation.

[0016] In some possible embodiments, the pin socket 11 is cylindrical and integrally formed with the base 1, which ensures that the pin socket 11 and the base 1 have high structural strength and good electrical connection performance, and can withstand large current flow without deformation or damage.

[0017] In some possible embodiments, an isolation post 13 is formed on the base 1 between the two through holes 12. The isolation post 13 can effectively prevent electromagnetic interference between the lead ends 21, improve the performance of the filter, and ensure that it can work stably during high-frequency signal processing without being affected by electromagnetic interference.

[0018] In some possible embodiments, the opening length of the two through holes 12 on one side of the base 1 is greater than the opening length of the two through holes 12 on the other side. This is because the through hole 12 with a shorter opening length is used for the input wire of the lead end 21, while the through hole 12 with a longer opening length is used for the output wire of the lead end 21. This design can avoid the abnormal phenomenon that the coil 2 will be lifted up when the lead end 21 appears, resulting in unevenness of the product. This can also ensure that the coil 2 is placed stably in the base 1, ensuring the stable operation of the filter.

[0019] In some possible embodiments, an annular positioning baffle 14 is formed on the outer side of the base 1. The coil 2 and the housing 3 are both installed inside the annular positioning baffle 14. The annular positioning baffle 14 can provide good positioning and support for the coil 2 and the housing 3, ensuring the overall structural stability of the filter and preventing the coil 2 and the housing 3 from shifting or loosening during use.

[0020] The horizontal common-mode filter of this utility model is innovative in its structural design. It abandons the traditional through-hole structure and improves the performance and reliability of the filter by a reasonable layout and the way the lead end 21 is wound and connected to the pin seat 11. This not only meets the requirements of SMT production, but also greatly improves the efficiency of production and assembly. It has broad market application prospects and high practical value.

[0021] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A horizontal common mode filter characterized by, It includes base (1), coil (2) and shell (3), the base (1) is discoid and its opposite two sides are provided with pin seat (11), the base (1) is provided with four through holes (12) on the two sides near the pin seat (11), the coil (2) can be placed in the base (1), the lead end (21) of the coil (2) can pass through the through hole (12) and be wound on the pin seat (11), the shell (3) is covered on the base (1) to shield the coil (2), the opposite two sides of the shell (3) are formed with the slot (31) that is left to the pin seat (11).

2. A common mode choke according to claim 1, characterized in that The pin seat (11) is cylindrical and is integrally formed with the base (1).

3. The common mode choke of claim 1, wherein, The position between two through holes (12) on the base (1) forms an isolation column (13).

4. The common mode choke of claim 1, wherein, The opening length of two through holes (12) on one side of the base (1) is greater than that of two through holes (12) on the other side.

5. The horizontal common-mode filter of claim 1, wherein, The outside of the base (1) forms an annular positioning retaining wall (14), and the coil (2) and the shell (3) are installed in the annular positioning retaining wall (14).

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