Compact vertical common mode choke

Abstract

The utility model discloses a compact vertical common-mode inductor, which comprises a magnetic core, an upper transverse magnetic rod and a lower transverse magnetic rod, and the magnetic core comprises two longitudinal magnetic columns, an upper transverse magnetic rod and a lower transverse magnetic rod which surround to form a vertical square ring; the two groups of coils are respectively wound on the two longitudinal magnetic columns, the top ends of the coils are connected with inner side conducting strips, and the bottom ends of the coils are connected with outer side conducting strips; the bottom plate is provided with an inner side conductive pin and an outer side conductive pin, the inner side conductive sheet is connected with the inner side conductive pin, the outer side conductive sheet is connected with the outer side conductive pin, and a fence is arranged on the bottom plate; the partition plate is arranged between the two sets of coils, the bottom face of the partition plate abuts against the top face of the lower transverse magnetic rod, stand columns are arranged on the two opposite sides of the partition plate, the two stand columns are located on the two opposite sides of the lower transverse magnetic rod respectively, the stand columns are provided with positioning grooves, and the inner side conducting strips are arranged in the two positioning grooves. The inductor is high in space utilization rate, the inner side conducting strip is arranged in the space surrounded by the two coils, the application requirement of compact design is met, and the electrical performance of the inductor can be effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of common mode inductance, in particular to a compact vertical common mode inductance. BACKGROUND

[0002] In the signal processing process of electronic equipment, common mode inductance as an important electromagnetic interference suppression element is widely used in power supply lines, signal lines and other occasions to eliminate common mode noise and improve signal quality.

[0003] Traditional common mode inductance usually adopts a horizontal structure, and the magnetic core and the coil are both horizontally placed, which occupies a large space on the board and is difficult to meet the installation application requirements of limited board space. In related technologies, the magnetic core and the coil of part of the inductance are vertically placed, and the vertical inductance needs to be provided with a bottom plate and a back plate for installation, and the back plate is located on the same side outside the two coils. This vertical inductance structure is complicated, occupies a large space, and is difficult to meet the application scenarios with limited space. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems existing in the prior art. To this end, the utility model provides a compact vertical common mode inductance, which occupies a small space, has a compact and reliable structure, and has reliable electrical performance.

[0005] According to the compact vertical common mode inductance of the utility model embodiment, the utility model comprises:

[0006] The magnetic core comprises two longitudinal magnetic columns, an upper horizontal magnetic rod and a lower horizontal magnetic rod which surround a vertical square ring;

[0007] The coil is provided with two groups and is wound around the two longitudinal magnetic columns, the top end of the coil is connected with an inner conductive sheet, and the bottom end of the coil is connected with an outer conductive sheet;

[0008] The bottom plate is provided with two inner conductive pins and two outer conductive pins, the two inner conductive sheets are respectively connected with the two inner conductive pins, the two outer conductive sheets are respectively connected with the two outer conductive pins, the bottom plate is provided with a surrounding fence, and the surrounding fence surrounds the periphery of the lower horizontal magnetic rod;

[0009] The partition plate is arranged between the two groups of coils, the bottom surface of the partition plate abuts against the top surface of the lower horizontal magnetic rod, opposite sides of the partition plate are provided with vertical columns, the two vertical columns are respectively located on the opposite sides of the lower horizontal magnetic rod and are connected to the bottom plate, one side of each vertical column is provided with a positioning groove, and the two inner conductive sheets are respectively arranged in the two positioning grooves.

[0010] In the embodiment, the horizontal projection of the inner conductive sheet is located outside the horizontal projection of the magnetic core.

[0011] In the embodiment, the two inner conductive sheets are centrally symmetric about the central axis of the magnetic core.

[0012] In the embodiment, the inner conductive sheet bypasses the top surface of the partition plate, which is located between the connected inner conductive sheet and the coil.

[0013] In the embodiment, the enclosure is provided with two clamping holes matched with two vertical columns respectively, and two inner conductive pins are connected to the bottom ends of the two clamping holes respectively.

[0014] In the embodiment, the enclosure is provided with two accommodating holes matched with two outer conductive sheets respectively, and two outer conductive pins are connected to the bottom ends of the two accommodating holes respectively.

[0015] In the embodiment, the enclosure is provided with two first glue material filling holes matched with two vertical columns respectively, and one end of each first glue material filling hole is arranged on the side surface of the corresponding vertical column.

[0016] In the embodiment, the enclosure is provided with a plurality of second glue material filling holes, and one end of each second glue material filling hole is arranged on the side surface of the lower horizontal magnetic rod.

[0017] The embodiments of the utility model have at least the following beneficial effects:

[0018] By adopting the vertical square ring magnetic core structure and the coil spirally wound in the vertical direction, the overall space occupied by the common mode inductance is greatly reduced, which is more suitable for application scenarios with limited space, and the vertical layout is conducive to natural convection and radiation heat dissipation. The partition plate is arranged between the two coils to effectively separate the two coil structures, and the two positioning grooves are arranged on the partition plate to accommodate and install the two inner conductive sheets, which can make full use of the space surrounded by the inductance, has high space utilization, and the inner conductive sheet is arranged in the space surrounded by the two coils, which can reduce the use of additional space and additional structure, not only can save the use of materials and reduce the cost of inductance, but also can significantly reduce the occupied area when the inductance is applied, which can effectively meet the application demand of small area installation, especially combined with the vertical layout structure, which meets the application demand of compact design. At the same time, the partition plate cooperates with the two vertical columns to position the lower horizontal magnetic rod on the bottom plate, cooperates with the enclosure to limit the position of the lower horizontal magnetic rod, and can effectively improve the stability of the connecting structure between the magnetic core and the bottom plate. The inner conductive sheet is positioned by the positioning groove, which can effectively ensure the stability of the position of the inner conductive sheet, and can effectively ensure the reliability of the electrical performance of the inductance. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0020] Figure 1 It is a three-dimensional structure schematic view of the compact vertical common mode inductance of the embodiments of the utility model;

[0021] Figure 2 Fig. 3 is a perspective view of the compact vertical common mode inductor from another perspective according to an embodiment of the present application;

[0022] Figure 3 Fig. 4 is a perspective view of the compact vertical common mode inductor from a top perspective according to an embodiment of the present application;

[0023] Figure 4 Fig. 5 is a cross-sectional view along A-A' of the compact vertical common mode inductor according to an embodiment of the present application; Figure 3

[0024] Figure 5 Fig. 6 is an exploded view of the compact vertical common mode inductor according to an embodiment of the present application.

[0025] Reference signs:

[0026] magnetic core 100, vertical magnetic column 110, upper horizontal magnetic rod 120, lower horizontal magnetic rod 130;

[0027] coil 200, inner conductive sheet 210, outer conductive sheet 220;

[0028] bottom plate 300, inner conductive leg 310, outer conductive leg 320, fence 330, clamping hole 331, accommodation hole 332, first adhesive filling hole 333, second adhesive filling hole 334;

[0029] partition plate 400, vertical column 410, positioning groove 411. DETAILED DESCRIPTION

[0030] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0031] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, left, right, front, back, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0032] In the description of the present application, if there is a description of a wire sleeve and a support, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features. ​

[0033] In the description of the utility model, unless otherwise expressly limited, the words such as setting, installation, connection should be understood broadly, and the skilled person in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0034] In the signal processing process of electronic equipment, common mode inductance as an important electromagnetic interference suppression element is widely used in power supply lines, signal lines and other occasions to eliminate common mode noise and improve signal quality. The traditional common mode inductance usually adopts horizontal structure, and the magnetic core and the coil are horizontally placed, which occupies a large space on the board, and it is difficult to meet the installation application requirements of limited board space. In the related technology, the magnetic core and the coil of part of the inductance are vertically placed. This vertical inductance needs to be provided with a bottom plate and a back plate for installation, and the back plate is located on the same side outside the two coils. This vertical inductance structure is complicated, occupies a large space, and is difficult to meet the application scene of limited space. The magnetic core structure is not compact, and the heat dissipation performance is poor. These problems limit the application of common mode inductance in a wider field.

[0035] In view of the above problems, the compact vertical common mode inductance of the utility model aims to realize the miniaturization, high performance and low cost of the common mode inductance through the optimization of the magnetic core structure, the improvement of the coil winding method and the improvement of the assembly efficiency.

[0036] The compact vertical common mode inductance of the utility model embodiment is described below with reference to the accompanying Figure 1 to the accompanying Figure 5 , the compact vertical common mode inductance of the utility model embodiment occupies a small space, has a compact and reliable structure, and has reliable electrical performance.

[0037] With reference to Figures 1 to 5 , the compact vertical common mode inductance of the utility model embodiment comprises:

[0038] The magnetic core 100 comprises two longitudinal magnetic columns 110, an upper horizontal magnetic rod 120 and a lower horizontal magnetic rod 130 surrounding a vertical square ring, the upper horizontal magnetic rod 120 of the magnetic core 100 is vertically arranged above the lower horizontal magnetic rod 130, and the upper and lower ends of the two longitudinal magnetic columns 110 are respectively connected to the corresponding end portions of the upper horizontal magnetic rod 120 and the lower horizontal magnetic rod 130;

[0039] The coil 200 is provided with two groups and is respectively wound on the two longitudinal magnetic columns 110, and the coil 200 is spirally wound in the vertical direction. Preferably, the two groups of coils 200 are symmetrically arranged about the center axis of the common mode inductance, the top end of the coil 200 is connected to the inner side conductive sheet 210, the inner side conductive sheet 210 spans the height of the coil 200 and reaches below the coil 200, and the bottom end of the coil 200 is connected to the outer side conductive sheet 220;

[0040] The bottom plate 300 is provided with two inner conductive pins 310 and two outer conductive pins 320. The positions of the two inner conductive pins 310 correspond to the positions of the two inner conductive sheets 210, and the positions of the two outer conductive pins 320 correspond to the positions of the two outer conductive sheets 220. The bottom ends of the two inner conductive sheets 210 are respectively connected to the top ends of the two inner conductive pins 310, which can be connected by soldering with tin paste, etc. The bottom ends of the two outer conductive sheets 220 are respectively connected to the top ends of the two outer conductive pins 320, which can be connected by soldering with tin paste, etc. The inner conductive pins 310 and the outer conductive pins 320 protrude from the bottom surface of the bottom plate 300. The inner conductive pins 310 and the outer conductive pins 320 can be set as paster pins or plug-in pins. The bottom plate 300 is provided with a surrounding fence 330, which surrounds the lower horizontal magnetic rod 130. The lower horizontal magnetic rod 130 is connected to the bottom plate 300 and the surrounding fence 330 by an adhesive.

[0041] The partition plate 400 is arranged between the two groups of coils 200 and passes through the center of the magnetic core 100. The bottom surface of the partition plate 400 abuts against the top surface of the lower horizontal magnetic rod 130. The opposite sides of the partition plate 400 are respectively provided with a stand 410. The two stands 410 are respectively located on the opposite sides of the lower horizontal magnetic rod 130, and the bottom of each stand 410 is connected to the bottom plate 300. One side of each stand 410 is provided with a positioning groove 411. The two inner conductive sheets 210 are respectively arranged in the two positioning grooves 411. The stand 410 is connected to the bottom plate 300 and the surrounding fence 330 by an adhesive.

[0042] By adopting the vertical square ring magnetic core 100 structure and the coil 200 wound in the vertical direction, the overall space occupied by the common mode inductance is greatly reduced, which is more suitable for space-limited application scenarios, and the vertical layout is conducive to natural convection and radiation heat dissipation. The partition plate 400 is arranged between the two coils 200 to effectively separate the two coil 200 structures, and the two positioning grooves 411 are arranged on the partition plate 400 to accommodate and install the two inner conductive sheets 210. The regular space surrounded by the inductance can be fully utilized, the space utilization rate is high, and the inner conductive sheet 210 is arranged in the space surrounded by the two coils 200, which can effectively save the setting of the back plate in the traditional vertical inductance, reduce the use of additional space and additional structure, not only save the use of materials and reduce the cost of inductance, but also significantly reduce the occupied area of the inductance application, which can effectively meet the application demand of small area installation. Especially combined with the vertical layout structure, it meets the application demand of compact design; at the same time, the partition plate 400 cooperates with the two columns 410 to position the lower horizontal magnetic rod 130 on the bottom plate 300, cooperates with the fence 330 to limit the position of the lower horizontal magnetic rod 130 around, which can effectively improve the stability of the connection structure between the magnetic core 100 and the bottom plate 300. The inner conductive sheet 210 is positioned by the positioning groove 411, which can effectively ensure the stability of the position of the inner conductive sheet 210 and the reliability of the electrical performance.

[0043] It can be understood that the horizontal projection of each inner conductive sheet 210 is located outside the horizontal projection of the magnetic core 100, specifically that the two inner conductive sheets 210 are located on opposite sides of the lower horizontal magnetic rod 130, which can ensure the stable and reliable installation environment of the inner conductive sheet 210, reduce the production difficulty, and reduce the bending frequency of the inner conductive sheet 210, thereby reducing the internal stress of the inductance, and effectively improving the stability of the overall structure.

[0044] It can be understood that the two inner conductive sheets 210 are centrally symmetric about the center axis of the magnetic core 100 perpendicular to the horizontal plane, cooperate with the partition plate 400 to fully utilize the space between the two coils 200, and are used to accommodate the inner conductive sheet 210 for realizing the conduction of the internal circuit of the inductance. The central symmetric arrangement can effectively improve the space utilization rate.

[0045] It can be understood that the inner conductive sheet 210 passes around the top surface of the partition plate 400, and the partition plate 400 is located between each group of connected inner conductive sheets 210 and coils 200. The partition plate 400 separates the two coils 200, and the partition plate 400 separates the corresponding connected inner conductive sheets 210 and coils 200.

[0046] The inner conductive sheet 210 is arranged into the positioning groove 411 after crossing the top surface of the partition plate 400, which can effectively improve the stability of the relative position between the coil 200, the inner conductive sheet 210 and the partition plate 400. The partition plate 400 is connected to the bottom plate 300 through the stand column 410, thereby improving the stability of the relative position between the coil 200, the inner conductive sheet 210 and the bottom plate 300, and the structure of the overall inductor is stable and reliable.

[0047] It can be understood that the fence 330 is provided with two clamping holes 331 matched with two stand columns 410 respectively, and two inner conductive pins 310 are connected to the bottom ends of the two clamping holes 331 respectively. Each stand column 410 is connected to the corresponding clamping hole 331. The inner conductive sheet 210 arranged in the positioning groove 411 is connected to the corresponding clamping hole 331 through the stand column 410. The bottom end of the inner conductive sheet 210 is connected to the inner conductive pin 310 through welding or the like.

[0048] The clamping hole 331 can reliably limit the position of the stand column 410, effectively improve the stability of the relative position between the fence 330 and the bottom plate 300, and facilitate the alignment installation, thereby effectively simplifying the installation operation.

[0049] It can be understood that the fence 330 is provided with two letting holes 332 matched with two outer conductive sheets 220 respectively, and two outer conductive pins 320 are connected to the bottom ends of the two letting holes 332 respectively. Each outer conductive sheet 220 is connected to the corresponding letting hole 332. The outer conductive sheet 220 is connected to the letting hole 332, and the bottom end of the outer conductive sheet 220 is connected to the inner conductive pin 310 through welding or the like. The letting hole 332 is used for connecting the outer conductive sheet 220, which can effectively improve the stability of the relative position between the outer conductive sheet 220 and the fence 330, thereby effectively improving the stability of the overall structure of the inductor.

[0050] It can be understood that the fence 330 is provided with two first glue filling holes 333 matched with two stand columns 410 respectively. One end of each first glue filling hole 333 is arranged on the side surface of the corresponding stand column 410. Preferably, when the fence 330 is provided with the clamping hole 331 and the first glue filling hole 333 simultaneously, the end of the first glue filling hole 333 is connected to the side of the clamping hole 331 to realize the communication between the first glue filling hole 333 and the clamping hole 331. During the processing and production, the insulating resin or other glue is injected into the first glue filling hole 333 to realize the connection between the stand column 410 and the fence 330. The first glue filling hole 333 can effectively limit the position of the glue, and the operation of the adhesive connection is convenient, and the effect of the adhesive connection is stable and reliable.

[0051] It can be understood that the enclosure 330 is provided with a plurality of second glue filling holes 334, one end of each second glue filling hole 334 is arranged on the side of the lower horizontal magnetic rod 130, and during production, the second glue filling hole 334 is injected with glue such as insulating resin, which is used to realize the connection between the lower magnetic rod and the enclosure 330, and the second glue filling hole 334 can effectively limit the position of the glue, the operation of the adhesive connection is convenient, and the effect of the adhesive connection is stable and reliable.

[0052] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A compact vertical common mode inductor, characterized by, The application relates to a magnetic core (100) comprising two longitudinal magnetic columns (110) arranged in a vertical square ring, an upper horizontal magnetic rod (120) and a lower horizontal magnetic rod (130); two coils (200) are arranged around the two longitudinal magnetic columns (110), the top end of the coil (200) is connected with an inner conductive sheet (210), and the bottom end of the coil (200) is connected with an outer conductive sheet (220); a bottom plate (300) is provided with two inner conductive pins (310) and two outer conductive pins (320), the two inner conductive sheets (210) are respectively connected with the two inner conductive pins (310), the two outer conductive sheets (220) are respectively connected with the two outer conductive pins (320), and a fence (330) is arranged on the bottom plate (300) and surrounds the lower horizontal magnetic rod (130); a partition plate (400) is arranged between the two coils (200), the bottom surface of the partition plate (400) abuts against the top surface of the lower horizontal magnetic rod (130), opposite sides of the partition plate (400) are respectively provided with a stand column (410), the two stand columns (410) are respectively arranged on the opposite sides of the lower horizontal magnetic rod (130) and are connected with the bottom plate (300), one side of each stand column (410) is provided with a positioning groove (411), and the two inner conductive sheets (210) are respectively arranged in the two positioning grooves (411). The horizontal projection of the inner conductive sheet (210) is located outside the horizontal projection of the magnetic core (100). The two inner conductive sheets (210) are centrosymmetric about the central axis of the magnetic core (100). The inner conductive sheet (210) passes around the top surface of the partition plate (400), and the partition plate (400) is located between the connected inner conductive sheet (210) and the coil (200). The fence (330) is provided with two clamping holes (331) matched with the two stand columns (410), the two inner conductive pins (310) are respectively connected with the bottom end of the two clamping holes (331), and the stand column (410) is respectively inserted into the corresponding clamping hole (331).

2. A compact vertical common mode inductor according to claim 1, characterized in that, The fence (330) is provided with two accommodating holes (332) matched with the two outer conductive sheets (220), the two outer conductive pins (320) are respectively connected with the bottom end of the two accommodating holes (332), and the outer conductive sheet (220) is respectively inserted into the corresponding accommodating hole (332).

3. A compact vertical common mode inductor according to claim 1, wherein The fence (330) is provided with two first glue material filling holes (333) matched with the two stand columns (410), and one end of each first glue material filling hole (333) is arranged on the side surface of the corresponding stand column (410).

4. A compact vertical common mode inductor according to claim 3, wherein The fence (330) is provided with a plurality of second glue material filling holes (334), and one end of each second glue material filling hole (334) is arranged on the side surface of the lower horizontal magnetic rod (130).

5. A compact vertical common mode inductor as claimed in claim 1, wherein, ​ 6. A compact vertical common mode inductor according to claim 5, wherein, ​ 7. A compact vertical common mode inductor as claimed in claim 1, wherein, ​ 8. A compact vertical common mode inductor according to claim 7, characterized in that ​

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