Multi-winding layered isolation backbone type common-mode inductor

Abstract

The utility model relates to electronic components technical field, concretely relates to multi-winding layered isolation skeleton type common mode inductor, including winding assembly, the winding assembly includes the upper limit pad of top and the lower limit pad of bottom, a central shaft is fixedly installed between the center of two limit pad, copper wire spiral winding is on the central shaft. The utility model discloses the winding assembly including upper limit pad, lower limit pad, central shaft and stackable connecting structure through the design, realizes the layered assembly of multi-winding. Through the vertical direct plug -in cooperation of limiting block and slot, the threaded connection of screw cover and lower limit pad is combined, can guarantee the accurate positioning of multiple winding assembly stacking, can also realize firm connection, and the winding layer number is conveniently adjusted flexibly according to actual demand, and the layered structure can reduce the interference between different windings, improves the use flexibility and electrical performance of common mode inductor.

Description

Technical Field

[0001] This utility model relates to the field of electronic components technology, specifically to a multi-winding layered isolated frame common-mode inductor. Background Technology

[0002] In modern electronic devices, with the increasing integration and operating frequency of electronic systems, electromagnetic interference (EMI) problems in circuits are becoming increasingly prominent. Common-mode inductors, as important EMI suppression devices, can effectively suppress common-mode interference signals in circuits and are widely used in power supply circuits, communication circuits, and other fields.

[0003] Traditional common-mode inductors have certain limitations in their structural design. On the one hand, most common-mode inductors use a single winding or a simple multi-winding parallel structure, resulting in significant electromagnetic coupling between the windings. This leads to signal interference between different windings, reducing the filtering effect and electrical performance of the common-mode inductor. On the other hand, the winding layout and frame structure of traditional common-mode inductors are fixed, making it difficult to flexibly adjust the number of winding layers and structure according to actual circuit requirements, resulting in poor versatility and expandability. Furthermore, during actual installation and use, the lack of effective protective structures makes the windings susceptible to external impacts and wear, affecting the service life and operational stability of the common-mode inductor.

[0004] In view of this, we propose a multi-winding layered isolated frame common-mode inductor. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a multi-winding layered isolated frame common-mode inductor.

[0006] The technical solution of this utility model is: A multi-winding layered isolated frame common-mode inductor includes a winding assembly. The winding assembly comprises an upper limit plate at the top and a lower limit plate at the bottom. A central shaft is fixedly installed between the two limit plates, and copper wire is spirally wound around the central shaft. Several limit blocks are integrally formed near the edge of the top of the upper limit plate. Several slots are formed at the bottom of the lower limit plate, each slot vertically opposite a limit block. The limit blocks are sized to fit the slots, and when two winding assemblies are stacked, the limit blocks are inserted into the slots. A threaded cover is rotatably mounted on the outer circumference of the upper limit plate, and when two winding assemblies are stacked, the threaded cover is threadedly connected to the outer circumference of the lower limit plate above it. By designing a winding assembly including an upper limit plate, a lower limit plate, a central shaft, and a stackable connection structure, layered assembly of multiple windings is achieved. By vertically interlocking the limiting block and the slot, and combining the threaded connection between the threaded cover and the lower limiting plate, it can ensure accurate positioning when multiple winding components are stacked, and achieve a stable connection. It is convenient to flexibly adjust the number of winding layers according to actual needs. At the same time, the layered structure can reduce interference between different windings and improve the flexibility and electrical performance of common mode inductors.

[0007] As a preferred technical solution, an annular groove is formed on the outer circumference of the upper limit plate, and an inner convex ring is integrally formed on the inner circumference of the threaded cover near the bottom. The inner convex ring is rotatably connected to the annular groove. This design allows the threaded cover to rotate stably on the upper limit plate, providing rotational support and limiting the threaded cover to prevent it from falling off, while also ensuring the smoothness of the threaded connection operation and ensuring the ease of assembly and structural stability when the two winding assemblies are stacked together.

[0008] As a preferred technical solution, the outer circumference of the threaded cover is integrally formed with a plurality of equally spaced anti-slip protrusions. This effectively increases the friction between the operator's hand and the threaded cover, preventing slippage when tightening or loosening the threaded cover.

[0009] As a preferred technical solution, when the threaded cover is tightened on the lower limiting plate, the limiting block is tightly inserted into the slot. This design can further enhance the connection tightness between the two stacked winding assemblies, reduce assembly gaps, and avoid loosening caused by factors such as vibration.

[0010] As a preferred technical solution, an insulating plate is fixedly connected to the bottom of the lower limiting plate, and the slot extends to the insulating plate. Utilizing the insulating properties of the insulating plate, the electrical isolation between two adjacent stacked winding assemblies can be effectively enhanced.

[0011] As a preferred technical solution, the winding assembly is symmetrically provided with two protective plates, both of which are semi-circular, and the two protective plates are fixed by a number of fixing bolts. The protective plates can surround and protect the copper wire wound on the central shaft, preventing the copper wire from being damaged by external impacts or wear during assembly or use.

[0012] As a preferred technical solution, each of the protective plates has two symmetrical perforations at the top and bottom, respectively, with the top and bottom of the protective plate tightly fitted to the upper and lower limit plates. The perforations can be used to lead out the winding leads, facilitating wiring operations, while the tight fit between the protective plate and the upper and lower limit plates further enhances the fixing effect of the protective plate. At the same time, the perforations can help restrict the position of the copper wire, preventing the copper wire from becoming loose or shifting.

[0013] As a preferred technical solution, each of the protective plates has an extension plate integrally formed at both ends, and two adjacent extension plates are fixed by symmetrically arranged fixing bolts. This structural design allows the two semi-circular protective plates to be tightly spliced ​​into a complete ring-shaped protective structure, enhancing the overall structural strength of the protective plate and the stability of the copper wire wrapping.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention achieves layered assembly of multiple windings by designing a winding assembly comprising an upper limit plate, a lower limit plate, a central shaft, and a stackable connection structure. Through the vertically aligned insertion of the limit blocks and slots, combined with the threaded connection between the threaded cover and the lower limit plate, precise positioning of multiple winding assemblies when stacked is ensured, while a stable connection is achieved. This allows for flexible adjustment of the number of winding layers according to actual needs. Simultaneously, the layered structure reduces interference between different windings, improving the flexibility and electrical performance of the common-mode inductor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 A schematic diagram of a partial structure; Figure 3 This is a schematic diagram of the winding assembly in this utility model; Figure 4 This is a schematic diagram of the threaded cover in this utility model; The meanings of the labels in the diagram are as follows: 1. Winding assembly; 10. Upper limit plate; 11. Limit block; 12. Annular groove; 13. Central shaft; 14. Lower limit plate; 15. Slot; 16. Insulating plate; 2. Protective plate; 20. Extension plate; 21. Fixing bolt; 22. Through hole; 3. Threaded cover; 30. Anti-slip protrusion; 31. Inner convex ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0017] Please see Figures 1-4 This utility model provides a technical solution: A multi-winding layered isolated frame common-mode inductor includes a winding assembly 1. The winding assembly 1 includes an upper limit plate 10 at the top and a lower limit plate 14 at the bottom. A central shaft 13 is fixedly installed between the two limit plates, and copper wire is spirally wound on the central shaft 13. Several limit blocks 11 are integrally formed near the edge of the top of the upper limit plate 10. Several slots 15 are opened at the bottom of the lower limit plate 14, and the slots 15 are vertically aligned with the limit blocks 11. The limit blocks 11 and slots 15 are sized to fit each other. When the two winding assemblies 1 are stacked, the limit blocks 11 are inserted into the slots 15. A threaded cover 3 is rotatably installed on the outer circumference of the upper limit plate 10. When the two winding assemblies 1 are stacked, the threaded cover 3 is threadedly connected to the outer circumference of the lower limit plate 14 above it. By designing the winding assembly 1, which includes the upper limit plate 10, the lower limit plate 14, the central shaft 13, and the stackable connection structure, a multi-winding layered assembly is realized. By vertically interlocking the limiting block 11 with the slot 15, and combining the threaded cover 3 with the threaded connection of the lower limiting plate 14, it can ensure accurate positioning when multiple winding components 1 are stacked, and achieve a stable connection. It is convenient to flexibly adjust the number of winding layers according to actual needs. At the same time, the layered structure can reduce interference between different windings and improve the flexibility and electrical performance of the common mode inductor.

[0018] As a preferred embodiment, an annular groove 12 is formed on the outer circumference of the upper limit plate 10, and an inner convex ring 31 is integrally formed on the inner annular wall of the threaded cover 3 near the bottom. The inner convex ring 31 is rotatably connected to the annular groove 12. This design allows the threaded cover 3 to rotate stably on the upper limit plate 10, providing rotational support and limiting the threaded cover 3 to prevent it from falling off, while also ensuring the smoothness of the threaded connection operation and ensuring the ease of assembly and structural stability when the two winding assemblies 1 are stacked and connected.

[0019] As a preferred embodiment, the outer circumference of the threaded cover 3 is integrally formed with a plurality of equally spaced anti-slip protrusions 30. This can effectively increase the friction between the operator's hand and the threaded cover 3, and prevent slippage when tightening or loosening the threaded cover 3.

[0020] As a preferred embodiment, when the threaded cover 3 is tightened on the lower limiting plate 14, the limiting block 11 is tightly inserted into the slot 15. This design can further enhance the connection tightness between the two stacked winding assemblies 1, reduce assembly gaps, and avoid loosening caused by factors such as vibration.

[0021] In a preferred embodiment, an insulating plate 16 is fixedly connected to the bottom of the lower limiting plate 14, and the slot 15 extends onto the insulating plate 16. Utilizing the insulating properties of the insulating plate 16, the electrical isolation between two adjacent stacked winding assemblies 1 can be effectively enhanced.

[0022] In a preferred embodiment, the winding assembly 1 is provided with two symmetrical protective plates 2, both of which are semi-circular and are fixed by a number of fixing bolts 21. The protective plates 2 can surround and protect the copper wire wound on the central shaft 13, preventing the copper wire from being damaged by external impact or wear during assembly or use.

[0023] In a preferred embodiment, each guard plate 2 has two symmetrical perforations 22, one above the other. The top and bottom of the guard plate 2 are tightly fitted to the upper limit plate 10 and the lower limit plate 14, respectively. The perforations 22 can be used to lead out the winding leads, facilitating wiring operations. The tight fit between the guard plate 2 and the upper and lower limit plates 14 further enhances the fixing effect of the guard plate 2. At the same time, the perforations 22 can help limit the position of the copper wire, preventing the copper wire from becoming loose or shifting.

[0024] As a preferred embodiment, each protective plate 2 has an extension plate 20 integrally formed at both ends, and two adjacent extension plates 20 are fixed by symmetrically arranged fixing bolts 21. This structural design allows the two semi-circular protective plates 2 to be tightly spliced ​​into a complete ring-shaped protective structure, enhancing the overall structural strength of the protective plate 2 and the stability of the copper wire wrapping.

[0025] When using the multi-winding layered isolation frame common mode inductor of this utility model, firstly, a single winding assembly 1 serves as the basic unit, with copper wire spirally wound around the central shaft 13 to form an independent winding. The upper and lower limiting plates 14 provide axial limiting for the winding. The protective plate 2 is spliced ​​into a ring structure by splicing bolts to wrap the copper wire, which not only protects the winding from external damage, but also standardizes the lead wire path through the through hole 22 to ensure the stability of the winding structure.

[0026] When multi-winding functionality is required, expansion is achieved through stacked winding assemblies 1: the limiting block 11 of the lower assembly is vertically inserted into the slot 15 of the upper assembly for precise positioning. Simultaneously, the threaded cover 3 of the lower assembly is rotated to thread it into the lower limiting plate 14 of the upper assembly. The threaded fastening force ensures a tight fit between the limiting block 11 and the slot 15, guaranteeing a stable connection of the multi-layer assemblies. The insulating plate 16 provides electrical isolation between layers, preventing signal interference or leakage risks between different windings.

[0027] During operation, multiple windings work independently yet collaboratively through a layered structure, utilizing the characteristics of common-mode inductors to suppress common-mode interference signals. The layered isolation design reduces electromagnetic coupling interference between windings, the stacked structure ensures the stability of the magnetic field distribution, and the robust connection method and protective structure ensure that the inductor maintains stable electrical performance under conditions such as vibration and shock. Ultimately, this effectively suppresses common-mode interference in the circuit and improves the overall circuit's anti-interference capability.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-winding layered isolated frame common-mode inductor, characterized in that: The device includes a winding assembly (1), which includes an upper limit plate (10) at the top and a lower limit plate (14) at the bottom. A central shaft (13) is fixedly installed between the two limit plates. Copper wire is spirally wound on the central shaft (13). Several limit blocks (11) are integrally formed on the top of the upper limit plate (10) near the edge. Several slots (15) are opened at the bottom of the lower limit plate (14). Several slots (15) are vertically opposite to several limit blocks (11). The size of the limit blocks (11) and the slots (15) are adapted. When the two winding assemblies (1) are stacked, the limit blocks (11) are inserted into the slots (15). A threaded cover (3) is rotatably installed on the outer circumference of the upper limit plate (10). When the two winding assemblies (1) are stacked, the threaded cover (3) is threadedly connected to the outer circumference of the lower limit plate (14) above it.

2. The multi-winding layered isolated frame common-mode inductor as described in claim 1, characterized in that: An annular groove (12) is provided on the outer circumference of the upper limit plate (10), and an inner convex ring (31) is integrally formed on the inner circumference of the threaded cover (3) near the bottom. The inner convex ring (31) is rotatably connected to the annular groove (12).

3. The multi-winding layered isolated frame common-mode inductor as described in claim 2, characterized in that: The threaded cover (3) has a number of anti-slip protrusions (30) integrally formed on its outer circumference.

4. The multi-winding layered isolated frame common-mode inductor as described in claim 3, characterized in that: When the threaded cover (3) is tightened on the lower limit plate (14), the limit block (11) is tightly inserted into the slot (15).

5. The multi-winding layered isolated frame common-mode inductor as described in claim 4, characterized in that: An insulating plate (16) is fixedly connected to the bottom of the lower limit plate (14), and the slot (15) extends to the insulating plate (16).

6. The multi-winding layered isolated frame common-mode inductor as described in claim 5, characterized in that: The winding assembly (1) is provided with two symmetrical guard plates (2), both guard plates (2) are semi-circular, and the two guard plates (2) are fixed by a number of fixing bolts (21).

7. The multi-winding layered isolated frame common-mode inductor as described in claim 6, characterized in that: Each of the guard plates (2) has two perforations (22) symmetrically arranged on the top and bottom. The top and bottom of the guard plate (2) are closely fitted with the upper limit plate (10) and the lower limit plate (14) respectively.

8. The multi-winding layered isolated frame common-mode inductor as described in claim 7, characterized in that: Each of the guard plates (2) has an extension plate (20) integrally formed at both ends, and two adjacent extension plates (20) are fixed by symmetrically arranged fixing bolts (21).

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