Combined universal common mode choke structure

Abstract

The utility model discloses a combined universal common-mode inductor structure, which comprises a body module, a common-mode inductor module and a common-mode inductor module, the body module comprises a magnetic core and a support, coils are wound on two opposite sides of the magnetic core, the other two sides of the magnetic core are connected to the support, and the support is provided with four plugging pins; the conversion base is provided with four penetrating receding holes, a conductive fixing sleeve is arranged in each penetrating receding hole, the four plugging pins are connected into the four conductive fixing sleeves in a penetrating mode respectively, the support is connected to one side of the conversion base, and four patch pins are arranged on the side, away from the support, of the conversion base. The four patch pins are connected to one ends of the four conductive fixing sleeves respectively, and each patch pin is provided with a welding positioning hole. Working forms can be flexibly adjusted according to requirements, the use requirements of two welding forms can be effectively met, welding, installation and use are convenient, application cost is low, firmness of relative positions between the conversion base and the support can be effectively improved, and the effective service life is long.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of inductance, in particular to a combined general-purpose common mode inductor structure. BACKGROUND

[0002] Common mode inductor is a common mode interference suppression device with ferrite as the magnetic core, which is formed by two coils with the same size and the same number of turns symmetrically wound on the same ferrite ring-shaped magnetic core, and is a four-terminal device, mainly used for suppressing electromagnetic waves generated by high-speed signal lines from radiating emission.

[0003] According to the welding method, the common mode inductor is mainly divided into plug-in connection structure or patch connection structure, which is applied to plug-in welding and patch welding respectively, and in the related technology, in order to adapt to the design requirements of different application scenes, different common mode inductors need to be used for corresponding welding application, and the application operation is complicated, especially for the circuit structure requiring a large number of electronic components, a complicated and complex screening positioning structure needs to be provided for installation during welding assembly, and the application cost is high. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems in the prior art. Therefore, the utility model provides a combined general-purpose common mode inductor structure, which can meet the welding application requirements of plug-in type and patch type, is convenient to use for welding installation, and has low application cost.

[0005] The combined general-purpose common mode inductor structure according to the utility model embodiment comprises:

[0006] The body module comprises a magnetic core and a support, the magnetic core is annular, coils are wound on opposite sides of the magnetic core, and the other two sides of the magnetic core are connected to the support; the support is provided with four plug-in pins, each coil is connected to a corresponding plug-in pin, and the length of the plug-in pin protruding from the support is L1;

[0007] The conversion base is provided with four through positioning holes, each through positioning hole is provided with a conductive fixing sleeve, the four plug-in pins are respectively connected to the four conductive fixing sleeves, the support is connected to one side of the conversion base, the side of the conversion base away from the support is provided with four patch pins, the four patch pins are respectively connected to one end of the four conductive fixing sleeves, each patch pin is provided with a welding positioning hole, the hole diameter of the welding positioning hole is greater than the inner diameter of the conductive fixing sleeve, the height of the conductive fixing sleeve is H, the thickness of the patch pin is D, and H < L < (H+D).

[0008] In the embodiment, the support comprises two standing plates, the two standing plates are respectively connected to the opposite sides of the magnetic core, the conversion base is connected to the bottom of the two standing plates, and the coils are located above the conversion base.

[0009] In the embodiment, the conversion base is clamped and connected with each stand plate.

[0010] In the embodiment, the bottom of each stand plate is provided with a first clamping block, and the top of the conversion base is provided with a first clamping slot matched with the first clamping block, and the first clamping block is clamped in the first clamping slot.

[0011] In the embodiment, the bottom of each stand plate is provided with two first clamping blocks, the top of the conversion base is provided with four first clamping slots, the bottom of each stand plate is further provided with a second clamping slot between the two first clamping blocks, the top of the conversion base is further provided with two second clamping blocks, each second clamping block is located between the corresponding two first clamping slots, and each second clamping block is clamped in the corresponding second clamping slot.

[0012] In the embodiment, the four plug-in pins protrude from the bottom of the four first clamping blocks, and the four through holes are arranged at the bottom of the four first clamping slots.

[0013] In the embodiment, the conductive fixing sleeve is provided with a clamping hole and a reinforcing groove, the reinforcing groove is arranged on the side of the conductive fixing sleeve away from the support, the clamping hole is connected to the end of the reinforcing groove close to the support, and the groove diameter of the reinforcing groove is greater than the hole diameter of the clamping hole.

[0014] In the embodiment, the conductive fixing sleeve is a conductive silver glue sleeve, and the hole diameter of the reinforcing groove is smaller than the hole diameter of the welding positioning hole.

[0015] The embodiment of the utility model has at least the following beneficial effects:

[0016] Through the combination mode of the body module and the conversion base, the working form can be flexibly adjusted according to the requirement, when the surface mount type is applied, the solder is arranged at the bottom of the surface mount pin and filled into the welding positioning hole, so that the conduction connection of the coil is realized, when the plug-in type is applied, the conversion base is taken away from the body module, the plug-in pin can be directly inserted into the jack of the circuit board and welded, the combination universal common mode inductor structure can effectively meet the use requirement of the two welding forms, the same set of screening and feeding equipment can be shared during welding and installation, the development and design difficulty of welding and installation can be effectively reduced, the investment cost of welding and installation equipment can be effectively reduced, welding and installation are convenient to use and have low application cost; in addition, through reasonable design of the height of the plug-in pin protruding from the support, the height of the conductive fixing sleeve and the thickness of the surface mount pin, the bottom end of the plug-in pin can be effectively ensured to be located in the welding positioning hole, reliable contact connection between the solder and the surface mount pin and the plug-in pin can be ensured when the surface mount type is applied, not only the reliability of electrical connection during welding application can be effectively ensured, but also the firmness of the relative position between the conversion base and the support can be effectively improved, good structural stability can be maintained in unstable application environment, and the effective service life is long. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present practical new type will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the references to the following drawings, of which:

[0018] Figure 1 A perspective structural schematic view of the combined general-purpose common-mode inductor structure of the embodiments of the present practical new type;

[0019] Figure 2 A top view structural schematic view of the combined general-purpose common-mode inductor structure of the embodiments of the present practical new type;

[0020] Figure 3 A sectional view structural schematic view along Figure 2 A-A' of the embodiments of the present practical new type;

[0021] Figure 4 An exploded structural schematic view of the combined general-purpose common-mode inductor structure of the embodiments of the present practical new type.

[0022] Reference signs:

[0023] The body module 100, the magnetic core 110, the coil 120, the standing plate 130, the first clamping block 131, the second clamping groove 132, the plug-in pin 140;

[0024] The conversion base 200, the through accommodating hole 210, the conductive fixing sleeve 220, the clamping hole 221, the reinforcing groove 222, the patch pin 230, the welding positioning hole 231, the first clamping groove 240, the second clamping block 250. DETAILED DESCRIPTION

[0025] The embodiments of the present practical new type will be described in detail below, and examples of the embodiments 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 referring to the drawings are exemplary and are only used to explain the present practical new type, and cannot be understood as a limitation on the present practical new type.

[0026] In the description of the present practical new type, it should be understood that, if there is a description of the position relationship, for example, the position or location relationship indicated by up, down, left, right, front, back, etc. is based on the position or location relationship shown in the drawings, and is only for the convenience of describing the present practical new type and simplifying the description, and therefore cannot be understood as a limitation on the present practical new type.

[0027] In the description of the present practical new type, if there is a description of the wire sleeve and the support, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implying indicating the number of the indicated technical features or implying indicating the sequence of the indicated technical features.

[0028] In the description of the utility model, unless otherwise expressly limited, the words such as setting, installing, connecting 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.

[0029] Common mode inductance is a common mode interference suppression device with ferrite as magnetic core, which is formed by two coils with same size and same number of turns symmetrically wound on the same ferrite ring-shaped magnetic core, forming a four-terminal device, mainly used for suppressing electromagnetic wave generated by high-speed signal line to radiation emission. With the continuous development of electronic information technology, the design of high-frequency circuit, digital circuit and analog circuit in electronic equipment is also more and more complex, and the electromagnetic wave generated when they work will interfere with each other, therefore, the application of common mode inductance is also more and more widely. According to the classification of welding method, common mode inductance is mainly divided into plug-in connection structure or patch connection structure, which is applied to plug-in welding and patch welding respectively, in the related technology, in order to adapt to the design requirements of different application scenes, different common mode inductances need to be used for corresponding welding application, the application operation is complicated, especially for the circuit structure which needs to use a large number of electronic components, the complicated and complex screening and positioning structure needs to be equipped for installation during welding assembly, and the application cost is high.

[0030] Traditional common mode inductance usually includes a fixed magnetic core and a coil wound on the magnetic core, and the pin design is often directly welded on the circuit board, which lacks flexibility and universality. When the inductance value needs to be adjusted, the whole inductance element often needs to be replaced, which not only increases the cost, but also reduces the maintenance efficiency; in addition, in the application welding process, plug-in common mode inductance and patch common mode inductance often need to be used at the same time, the outer shapes of the two inductances are different, and often specific screening and positioning structures need to be equipped, the investment cost of welding equipment is high, and the development cost of welding design method is high. In the prior art, a common mode inductance capable of realizing plug-in welding and patch welding is urgently needed.

[0031] The combination universal common mode inductance structure of the utility model embodiment is described below with reference to the accompanying drawings. Figure 1 to the accompanying drawings. Figure 4 The combination universal common mode inductance structure of the utility model embodiment can meet the welding application requirements of plug-in type and patch type, is convenient to use in welding installation, and has low application cost.

[0032] With reference to Figures 1 to 4 The combination universal common mode inductance structure of the utility model embodiment comprises:

[0033] The body module 100 includes a magnetic core 110 and a support, the magnetic core 110 is annular, a group of coils 120 are wound on opposite edges of the magnetic core 110, and the other two edges of the magnetic core 110 are connected to the support, the support is provided with four plug-in pins 140, each coil 120 is connected to a corresponding plug-in pin 140, and the four plug-in pins 140 are connected to two ends of the two groups of coils 120 respectively, and the length of each plug-in pin 140 protruding from the support is L1;

[0034] The conversion base 200 is provided with four through positioning holes 210 matched with the four plug-in pins 140 respectively, each through positioning hole 210 is provided with a conductive fixing sleeve 220, the four plug-in pins 140 are respectively connected in the four conductive fixing sleeves 220, that is, each conductive fixing sleeve 220 is clamped and connected to a corresponding plug-in pin 140, so that the four plug-in pins 140 are electrically connected with the four conductive fixing sleeves 220 respectively, and the positioning between the body module 100 and the conversion base 200 can be realized, the support is connected to one side of the conversion base 200, that is, the support is connected to the top of the conversion base 200, and the side of the conversion base 200 away from the support is provided with four patch pins 230, that is, the four patch pins 230 are connected to the bottom of the conversion base 200, the four patch pins 230 are respectively connected to the ends of the four conductive fixing sleeves 220 away from the support, so that the four patch pins 230 are electrically connected with the four conductive fixing sleeves 220 respectively, each patch pin 230 is provided with a welding positioning hole 231, the welding positioning hole 231 is a circular hole, the conductive fixing sleeve 220 is a circular sleeve, the hole diameter of the welding positioning hole 231 is greater than the inner diameter of the conductive fixing sleeve 220, the height of the conductive fixing sleeve 220 is H, the thickness of the patch pin 230 is D, H < L < (H+D), not only can avoid the plug-in pin 140 protruding from the bottom surface of the patch pin 230, but also can ensure that the bottom end of the plug-in pin 140 extends into the welding positioning hole 231, so that the solder can effectively contact the plug-in pin 140 during welding, the stability of the structure and the reliability of the electrical connection during patch soldering can be effectively improved, and the relative position between the conversion base 200 and the support can be effectively ensured to be stable and firm, and the support and the conversion base 200 are both insulating structures.

[0035] Through the combination of the body module 100 and the conversion base 200, the working form can be flexibly adjusted according to the needs. When the patch type is applied, the solder is arranged at the bottom of the patch pin 230 and filled into the welding positioning hole 231, so that the conduction connection of the coil 120 is realized. When the plug-in type is applied, the conversion base 200 is taken away from the body module 100, the plug-in pin 140 can be directly inserted into the jack of the circuit board and plug-in welding is performed. The combined general common mode inductor structure can effectively meet the use requirements of the two welding forms. The same set of screening and feeding equipment can be shared during welding installation, which can effectively reduce the development and design difficulty of welding installation, and can effectively reduce the investment cost of welding installation equipment. The welding installation is convenient to use and has low application cost. In specific application, the conversion base 200 is only needed to be taken away before plug-in welding, which can effectively save the investment cost of equipment. In addition, by reasonably designing the height of the plug-in pin 140 protruding from the support, the height of the conductive fixing sleeve 220 and the thickness of the patch pin 230, the bottom end of the plug-in pin 140 can be effectively ensured to be located in the welding positioning hole 231. When the patch type welding is applied, the solder can simultaneously realize reliable contact connection with the patch pin 230 and the plug-in pin 140. Not only the reliability of electrical connection during welding application can be effectively ensured, but also the firmness of the relative position between the conversion base 200 and the support can be effectively improved. Good structural stability can be maintained in unstable application environment, and the effective service life is long.

[0036] It can be understood that the support includes two standing plates 130, which are respectively connected to the opposite sides of the magnetic core 110. The conversion base 200 is connected to the bottom of the two standing plates 130. The coil 120 is suspended above the conversion base 200. A gap is formed between the coil 120 and the conversion base 200, which can effectively improve the heat exchange efficiency between the coil 120 and the environment air, thereby effectively improving the heat dissipation performance of the combined general common mode inductor, and effectively improving its working performance.

[0037] It can be understood that the conversion base 200 is clamped and connected with each standing plate 130. The clamping and connecting mode is used to realize the alignment connection between the conversion base 200 and the standing plate 130. Not only the accuracy of the alignment operation during combined installation can be effectively improved, but also the stability of the structure during installation can be effectively improved.

[0038] It can be understood that the bottom of each standing plate 130 is provided with a first clamping block 131, and the top of the conversion base 200 is provided with a first clamping groove 240 matched with the first clamping block 131. The first clamping block 131 is clamped in the first clamping groove 240. The first clamping block 131 and the first clamping groove 240 can conveniently realize the alignment between the standing plate 130 and the conversion base 200, and can effectively improve the stability of the combined connection structure between the body module 100 and the conversion base 200.

[0039] It can be understood that the first clamping blocks 131 at the bottom of each stand plate 130 are provided with two, the first clamping slots 240 at the top of the conversion base 200 are provided with four, and the four first clamping blocks 131 are clamped in the four first clamping slots 240 respectively. The bottom of each stand plate 130 is also provided with a second clamping slot 132 between the corresponding two first clamping blocks 131, and the top of the conversion base 200 is also provided with two second clamping blocks 250, each of which is located between the corresponding two first clamping slots 240, and each of which is clamped in the corresponding second clamping slot 132.

[0040] By setting the concave-convex opposite groups of clamping blocks and clamping slots structure, the accuracy of the connection and positioning effect between the stand plate 130 and the conversion base 200 can be effectively improved, and the firmness of the combined connection structure can be effectively improved through the close clamping structure, and the stability of the relative position between the body module 100 and the conversion base 200 can be effectively improved.

[0041] It can be understood that the four connector pins 140 protrude from the bottom of the four first clamping blocks 131, and the four through holes 210 are provided at the bottom of the four first clamping slots 240. By setting the connector pins 140 and the conductive fixing sleeve 220 at the connection between the corresponding first clamping blocks 131 and first clamping slots 240, the anti-vibration performance of the combined general common mode inductor can be effectively improved. When subjected to external impact force or vibration force, the interaction force between the body module 100 and the conversion base 200 is mostly applied to each group of clamping structures, and the first clamping blocks 131 and the first clamping slots 240 can further improve the positional stability between the connector pins 140 and the conductive fixing sleeve 220, thereby effectively reducing the probability of the connector pins 140 being broken.

[0042] Preferably, the bottom of the conversion base 200 is provided with a plurality of heat dissipation grooves, which can effectively reduce the accumulated heat between the conversion base 200 and the applied circuit board, thereby effectively improving the heat dissipation performance of the combined general common mode inductor.

[0043] It can be understood that the conductive fixing sleeve 220 is provided with a clamping hole 221 and a reinforcing groove 222, the reinforcing groove 222 is arranged on the side of the conductive fixing sleeve 220 away from the support, that is, the reinforcing groove 222 is arranged at the bottom of the conductive fixing sleeve 220, the clamping hole 221 is connected to one end of the reinforcing groove 222 close to the support, that is, the clamping hole 221 is connected to the groove bottom of the reinforcing groove 222, the reinforcing groove 222 is a circular groove, the clamping hole 221 is a circular hole, the groove diameter of the reinforcing groove 222 is greater than the hole diameter of the clamping hole 221, that is, in the vertical direction, the width of the reinforcing groove 222 is greater than the width of the clamping hole 221, which can make the bottom end of the conductive fixing sleeve 220 further form a space for solder filling connection, when the solder is applied to the corresponding position of the circuit board, the solder is filled into the soldering positioning hole 231 and the inner bottom end of the conductive fixing sleeve 220, and the bottom end of the plug pin 140 is covered in the solder, and the stepped soldering structure obtained after the solder is finally solidified can effectively improve the stability of the connection structure between the body module 100 and the conversion base 200.

[0044] It can be understood that the conductive fixing sleeve 220 is a conductive silver paste sleeve, the aperture of the reinforcing groove 222 is smaller than the aperture of the soldering positioning hole 231, and the aperture of the hole arranged to pass through the positioning hole 210 is greater than the aperture of the soldering positioning hole 231, which can effectively improve the contact area between the conductive fixing sleeve 220 and the patch pin 230, not only can effectively improve the electrical performance between the conductive fixing sleeve 220 and the patch pin 230, but also can effectively improve the contact effect between the solder and the conductive fixing sleeve 220 when applied, which can effectively improve the working performance of the combined general common mode inductor.

[0045] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, the scope of the present application is defined by the claims and their equivalents.

Claims

1. A combination general purpose common mode inductor structure, characterized by, include: The main body module (100) includes a magnetic core (110) and a bracket. The magnetic core (110) is ring-shaped, and coils (120) are wound on both opposite sides of the magnetic core (110). The other two sides of the magnetic core (110) are connected to the bracket. The bracket is provided with four connector pins (140). Each coil (120) is connected to the corresponding connector pin (140). The connector pin (140) protrudes from the bracket by a length L1. The conversion base (200) has four through-holes (210), each of which has a conductive fixing sleeve (220). Four connector pins (140) are respectively connected to the four conductive fixing sleeves (220). The bracket is connected to one side of the conversion base (200). On the side of the conversion base (200) away from the bracket, four surface mount pins (230) are provided. Each surface mount pin (230) is connected to one end of one of the four conductive fixing sleeves (220). Each surface mount pin (230) has a welding positioning hole (231). The diameter of the welding positioning hole (231) is larger than the inner diameter of the conductive fixing sleeve (220). The height of the conductive fixing sleeve (220) is H, and the thickness of the surface mount pin (230) is D. <L<(H+D)。 2. A combined general purpose common mode inductor structure according to claim 1, characterized in that, The bracket includes two support plates (130), which are respectively connected to the opposite sides of the magnetic core (110). The conversion base (200) is connected to the bottom of the two support plates (130), and the coil (120) is located above the conversion base (200).

3. A combined general purpose common mode inductor structure according to claim 2, characterized in that, The conversion base (200) is connected to each of the support plates (130) by a snap-fit ​​connection.

4. A combined general purpose common mode inductor structure according to claim 3, characterized in that, Each of the support plates (130) has a first locking block (131) at its bottom, and the top of the conversion base (200) has a first locking groove (240) that matches the first locking block (131), and the first locking block (131) is engaged in the first locking groove (240).

5. A combined general purpose common mode inductor structure according to claim 4, characterized in that Two first locking blocks (131) are provided at the bottom of each of the support plates (130), four first locking slots (240) are provided at the top of the conversion base (200), a second locking slot (132) is provided at the bottom of each of the support plates (130) between two first locking blocks (131), and two second locking blocks (250) are provided at the top of the conversion base (200). Each second locking block (250) is located between two corresponding first locking slots (240), and each second locking block (250) is engaged in the corresponding second locking slot (132).

6. A combined general purpose common mode inductor structure according to claim 5, wherein, The four connector pins (140) protrude from the bottom of the four first card blocks (131), and the four through clearance holes (210) are respectively located at the bottom of the four first card slots (240).

7. A combined general purpose common mode inductor structure according to claim 1, characterized in that, The conductive fixing sleeve (220) is provided with a clamping hole (221) and a reinforcing groove (222), the reinforcing groove (222) is arranged on the side of the conductive fixing sleeve (220) away from the support, the clamping hole (221) is connected to one end of the reinforcing groove (222) close to the support, and the groove diameter of the reinforcing groove (222) is greater than the hole diameter of the clamping hole (221).

8. A combined general purpose common mode inductor structure according to claim 7, characterized in that The conductive fixing sleeve (220) is a conductive silver glue sleeve, and the hole diameter of the reinforcing groove (222) is smaller than the hole diameter of the welding positioning hole (231).

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