Integrated common mode inductor

Abstract

The utility model relates to the technical field of inductor structures, in particular to an integrated common mode inductor which comprises a base and a magnetic core arranged on the base, the magnetic core is annularly arranged, a plurality of coil windings are wound on the magnetic core in the circumferential direction of the magnetic core, a limiting partition plate is arranged between every two adjacent coil windings, the limiting partition plates are arranged on the magnetic core, and the limiting partition plates are arranged on the base. A limiting installation groove is formed between every two adjacent limiting partition plates, the coil windings are located in the limiting installation grooves, and the limiting installation grooves correspond to the coil windings one to one. A plurality of clamping grooves are formed in the base and used for being connected with the lower ends of the limiting partition plates in a clamped mode, and a plurality of wire outlet holes are further formed in the base. According to the utility model, the structure is novel, different groups of coil windings can be isolated under the action of the limiting partition plates, the safety distance between the coil windings can be enhanced, the structural stability and the use safety can be improved, the service life of the inductor can be prolonged, and effective electrical spacing can be realized; the arrangement of the wire outlet hole facilitates the connection with an external device.

Description

Technical Field

[0001] The utility model relates to the technical field of inductor structures, in particular to an integrated common-mode inductor. Background Art

[0002] In the current electromagnetic compatibility (EMC) design field, common-mode inductors, as key passive components, are widely used in electromagnetic interference (EMI) suppression in switching power supplies, communication equipment, and various electronic systems. The traditional common-mode inductor structure usually contains one or more pairs of coil windings symmetrically wound on the coil core. These windings are arranged closely adjacent to each other, aiming to attenuate common-mode noise by providing a high-impedance path, that is, those interference signals with the same direction in the two wires. However, although this design pattern is common and mature, it also exposes some technical limitations. In particular, the lack of effective electrical spacing between two adjacent coil windings may lead to the following problems: Closely adjacent coil windings are prone to produce strong mutual inductance effects, which not only affects the suppression efficiency of common-mode noise, but may also introduce unnecessary differential-mode noise suppression or amplification, interfering with the normal signal transmission of the system. Summary of the invention

[0003] The utility model provides an integrated common-mode inductor in view of the problems of the prior art. The utility model has a novel structure and an ingenious design. The limiting partition can isolate different groups of coil windings, which is beneficial to strengthening the safety distance between the coil windings, improving the structural stability and the safety of use, and is beneficial to increasing the service life of the inductor and realizing effective electrical spacing. The arrangement of the outlet hole facilitates connection with an external device.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides an integrated common-mode inductor, which comprises a base and a magnetic core mounted on the base, wherein the magnetic core is arranged in a ring shape, and a plurality of groups of coil windings are wound around the magnetic core along its circumference, and a limiting partition is arranged between each two adjacent coil windings, the limiting partition is arranged on the magnetic core, and a limiting installation groove is formed between two adjacent limiting partitions, the coil winding is located in the limiting installation groove, and the limiting installation groove corresponds to the coil winding one by one; a plurality of clamping grooves are arranged on the base, and the clamping grooves are used to clamp with the lower end of the limiting partition, and a plurality of wire outlet holes are also arranged on the base.

[0006] Wherein, an annular guard plate is arranged on the outer edge of the upper end surface of the base, and an installation cavity is formed between the annular guard plate and the upper end surface of the base, and the magnetic core and the coil winding are located in the installation cavity.

[0007] Wherein, the base is further provided with reinforcing ribs, the positions of the reinforcing ribs correspond to the positions of the limiting partitions, and the reinforcing ribs are used to support the limiting partitions.

[0008] Wherein, a plurality of card blocks are arranged on the base, and the card slots are arranged on the card blocks.

[0009] Wherein, a wire hole protection piece is arranged at the bottom of the base, and the wire hole protection piece is arranged with a plurality of through holes, and the through holes correspond to the wire outlet holes one by one.

[0010] Beneficial effects of the utility model:

[0011] The utility model has a novel structure and an ingenious design. The limiting installation groove formed between each two adjacent limiting partitions is used to arrange a group of coil windings. The limiting partitions can isolate different groups of coil windings, which is beneficial to strengthening the safety distance between the coil windings, improving the structural stability and safety of use, and is beneficial to increasing the service life of the inductor and realizing effective electrical spacing. Furthermore, the arrangement of the outlet holes can facilitate the outlet of the pins of the coil windings, which is convenient for connection with external devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the structure of an integrated common-mode inductor.

[0013] Figure 2 This is a structural decomposition diagram of an integrated common-mode inductor of the utility model.

[0014] Figure 3 It is a structural schematic diagram of the magnetic core of the utility model.

[0015] Figure 4 It is a structural schematic diagram of the base of the utility model.

[0016] exist Figures 1 to 4 Reference numerals in the drawings include:

[0017] 1. Base; 2. Magnetic core; 3. Coil winding; 4. Limiting partition; 5. Limiting installation groove; 6. Card slot; 7. Wire outlet hole; 8. Annular guard plate; 9. Installation cavity; 10. Reinforcement rib; 11. Card block; 12. Wire hole protection piece; 13. Perforation; 14. Support foot. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0019] An integrated common-mode inductor, such as Figures 1 to 4As shown, it includes a base 1 and a magnetic core 2 mounted on the base 1, the magnetic core 2 is arranged in a ring shape, a plurality of coil windings 3 are wound around the magnetic core 2 along its circumference, a limiting partition 4 is arranged between each two adjacent coil windings 3, the limiting partition 4 is arranged on the magnetic core 2, a limiting installation groove 5 is formed between two adjacent limiting partitions 4, the coil winding 3 is located in the limiting installation groove 5, and the limiting installation groove 5 corresponds to the coil winding 3 one by one; a plurality of clamping grooves 6 are arranged on the base 1, the clamping grooves 6 are used to clamp with the lower end of the limiting partition 4, and a plurality of wire outlet holes 7 are also arranged on the base 1. Specifically, the utility model has a novel structure and an ingenious design. The limiting installation groove 5 formed between each two adjacent limiting partitions 4 is used to arrange a group of coil windings 3. Through the role of the limiting partition 4, different groups of coil windings 3 can be isolated, which is beneficial to strengthening the safety distance between the coil windings 3, improving the structural stability and safety of use, and helping to increase the service life of the inductor; due to the role of the limiting partition 4, effective electrical spacing is achieved; further, the setting of the wire outlet hole 7 can facilitate the pin outlet of the coil winding 3, which is convenient for connection with an external device.

[0020] In the embodiment of the present application, a wire hole protection member 12 is provided at the bottom of the base 1, and the wire hole protection member 12 is provided with a plurality of perforations 13, and the perforations 13 correspond to the wire outlet holes 7 one by one. Specifically, the wire hole protection member 12 can protect the wire outlet hole 7 at one end of the base 1 (i.e., the wire outlet end), so as to prevent the wire outlet end of the wire outlet hole 7 from being damaged and affecting the service life, and the structural reliability is strong. Furthermore, support feet 14 are provided at both ends of the wire hole protection member 12 to prevent wear.

[0021] In the embodiment of the present application, an annular guard plate 8 is provided at the outer edge of the upper end surface of the base 1, and a mounting cavity 9 is formed between the annular guard plate 8 and the upper end surface of the base 1, and the magnetic core 2 and the coil winding 3 are located in the mounting cavity 9. Specifically, the magnetic core 2 and the coil winding 3 are located in the mounting cavity 9 and are protected by the annular guard plate 8. When the utility model is installed, the wear of the magnetic core 2 and the coil winding 3 or damage caused by operating errors can be avoided or reduced, and the use is convenient and reliable.

[0022] In the embodiment of the present application, the base 1 is further provided with a reinforcing rib 10, the position of the reinforcing rib 10 corresponds to the position of the limiting partition 4, and the reinforcing rib 10 is used to support the limiting partition 4. Specifically, with the provision of the reinforcing rib 10, on the one hand, the limiting partition 4 can be positioned and supported, and on the other hand, the structural strength of the base 1 can be improved.

[0023] In the embodiment of the present application, a plurality of clamping blocks 11 are provided on the base 1, and the clamping slots 6 are provided on the clamping blocks 11. Specifically, the clamping blocks 11 are located at the ends of the reinforcing ribs 10, so that the reinforcing ribs 10 can support the limiting partition 4, and the limiting partition 4 can be engaged with the clamping slots 6 of the clamping blocks 11. That is, when the magnetic core 2 is assembled in the installation cavity 9, the limiting partition 4 is engaged in the clamping slots 6, which means that the reinforcing ribs 10 have supported the limiting partition 4. There is no need to align the limiting partition 4 with the reinforcing ribs 10 during installation, thereby improving assembly efficiency and convenience.

[0024] In the embodiment of the present application, the number of the coil windings 3 can be four groups, which are symmetrically distributed in pairs; further, the plurality of wire outlet holes 7 are arranged in two rows, and the two rows of wire outlet holes 7 are respectively on both sides of the base 1, with a neat structure and good integrity.

[0025] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. An integrated common-mode inductor, characterized in that: It includes a base and a magnetic core mounted on the base, the magnetic core is arranged in a ring shape, a plurality of coil windings are wound around the magnetic core along its circumference, a limiting partition is arranged between each two adjacent coil windings, the limiting partition is arranged on the magnetic core, a limiting installation groove is formed between two adjacent limiting partitions, the coil winding is located in the limiting installation groove, and the limiting installation groove corresponds to the coil winding one by one; a plurality of clamping grooves are arranged on the base, the clamping grooves are used to clamp with the lower end of the limiting partition, and a plurality of wire outlet holes are also arranged on the base.

2. The integrated common mode inductor according to claim 1, characterized in that: An annular guard plate is arranged on the outer edge of the upper end surface of the base, and a mounting cavity is formed between the annular guard plate and the upper end surface of the base, and the magnetic core and the coil winding are located in the mounting cavity.

3. The integrated common mode inductor according to claim 1, characterized in that: The base is also provided with reinforcing ribs, the positions of which correspond to the positions of the limiting partitions, and the reinforcing ribs are used to support the limiting partitions.

4. The integrated common mode inductor according to claim 1, characterized in that: A plurality of card blocks are arranged on the base, and the card slots are arranged on the card blocks.

5. The integrated common mode inductor according to claim 1, characterized in that: A wire hole protection piece is arranged at the bottom of the base, and the wire hole protection piece is arranged with a plurality of through holes, and the through holes correspond to the wire outlet holes one by one.

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