CN216849598U - Common mode inductor - Google Patents

Abstract

The utility model discloses a common mode inductor, which comprises an insulating base body, a magnetic core, a copper sheet assembly, an insulating spacer unit and an insulating base, wherein the magnetic core is arranged in an inner cavity of the insulating base body, the copper sheet assembly comprises a winding copper sheet module and a connecting copper sheet module, and a plurality of pins are arranged in the copper sheet assembly, the winding copper sheet module comprises two groups of winding copper sheet units, the two groups of winding copper sheet units are respectively inserted into two sides of the insulation base body, the insulation spacer unit is arranged between the two groups of winding copper sheet units, the connection copper sheet module comprises two groups of connection copper sheet units, a plurality of connection copper sheets in each group of connection copper sheet units are respectively used for connecting each winding copper sheet in each corresponding group of winding copper sheet units, the insulation base is connected and arranged at the bottom of the winding copper sheet module, and a plurality of first holes are formed in the insulation base to expose each pin in the copper sheet assembly. The common mode inductor provided by the utility model not only saves the winding process of a machine, but also can greatly reduce the volume of a product.

Description

Common mode inductor

Technical Field

The utility model relates to the technical field of electrical components, in particular to a common-mode inductor.

Background

The common mode inductor is used as a filter and widely applied to filtering common mode electromagnetic interference on a signal line; however, the conventional common mode inductor is usually formed by copper wire winding, and if the common mode inductor is required to be prepared for application in a large current environment, a wire with a relatively large cross-sectional area is required for winding, and the following problems exist when the wire with the relatively large cross-sectional area is used for winding: firstly, the processing difficulty of the winding equipment is high; secondly, the manufacturing is influenced by the relatively complex working procedures of tin coating, welding, forming and the like of the wire with large sectional area; thirdly, the common mode inductor formed by the windings is too bulky and has limited applications.

The above background disclosure is only for the purpose of assisting understanding of the concept and technical solution of the present invention and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a common mode inductor which not only saves a machine winding process, but also can greatly reduce the volume of a product.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model discloses a common mode inductor, which comprises an insulation base body, a magnetic core, a copper sheet assembly, an insulation spacer unit and an insulation base, wherein the magnetic core is arranged in an inner cavity of the insulation base body, the copper sheet assembly comprises a winding copper sheet module and a connection copper sheet module, a plurality of pins are arranged in the copper sheet assembly, the winding copper sheet module comprises two groups of winding copper sheet units, each group of winding copper sheet units comprises a plurality of winding copper sheets, the two groups of winding copper sheet units are respectively inserted and arranged at two sides of the insulation base body, the insulation spacer unit is arranged between the two groups of winding copper sheet units, the connection copper sheet module comprises two groups of connection copper sheet units, each group of connection copper sheet units respectively comprises a plurality of connection copper sheets, the plurality of connection copper sheets in each group of connection copper sheet units are respectively used for connecting the winding copper sheets in each corresponding group of winding copper sheet units, the insulating base is connected and arranged at the bottom of the winding copper sheet module, and a plurality of first holes are formed in the insulating base to expose all pins in the copper sheet module.

In a further embodiment, the winding copper sheet is of a U-shaped structure, and protruding parts and/or pins are arranged at two ends of the U-shaped structure.

In a further embodiment, at least part of the connecting copper sheets are provided with two second holes, and the two second holes are respectively used for connecting the protruding parts at the end parts of two adjacent winding copper sheets in the winding copper sheet unit.

In a further embodiment, at least one end of each of the connection copper sheet units is provided with a second hole, and the other end of each of the connection copper sheet units is provided with a pin, wherein the second hole is used for connecting a protruding part at the end of any one of the winding copper sheets in the winding copper sheet unit.

In a further embodiment, the insulation spacer units comprise a first insulation spacer, a second insulation spacer and a third insulation spacer, the first insulation spacer and the second insulation spacer are respectively and vertically connected to two sides of the third insulation spacer, the first insulation spacer is arranged between two groups of winding copper sheet units, the second insulation spacer is arranged between two groups of connection copper sheet units, and a plurality of third holes are formed in the third insulation spacer so that protruding parts and/or pins at two ends of the winding copper sheets can penetrate out of the corresponding third holes.

In a further embodiment, the connecting copper sheets and the winding copper sheets are connected by adopting a soldering tin connection and/or a riveting connection mode.

In a further embodiment, a plurality of positioning ribs are arranged on the insulating base body, and the plurality of positioning ribs are used for positioning each winding copper sheet in the two groups of winding copper sheet units.

In a further embodiment, the magnetic core is a nanocrystalline magnetic core.

In a further embodiment, the winding copper sheet and the connecting copper sheet are respectively made of a sprayed tin copper sheet.

In a further embodiment, the pins are tooth-like structures.

Compared with the prior art, the utility model has the beneficial effects that: according to the common mode inductor disclosed by the utility model, the required number of turns is achieved by connecting the copper sheets with the winding copper sheets, a machine winding process can be omitted by adopting the winding copper sheet compression joint structure, the direct corresponding assembly operation is simple, the manufacturing efficiency is improved, the manufacturing volume of the winding copper sheet compression joint structure is smaller, the space distribution of a customer space is facilitated, and the space is saved.

In a further scheme, the winding copper sheet can be manufactured through a die, tin is sprayed on the surface to prevent oxidation, and the pins are made into teeth, so that a user can conveniently fix and weld the common mode inductor and the circuit PCB through soldering tin. Furthermore, each insulating spacer in the insulating spacer unit is positioned and isolated from the insulating base body, so that the insulation between winding copper sheets is ensured; the winding copper sheet crimping structure design product has the advantages of good consistency, convenience in quality control and high production efficiency.

Drawings

FIG. 1 is a schematic diagram of the structure of a common mode inductor of the preferred embodiment of the present invention;

FIG. 2 is a bottom view structural schematic diagram of a common mode inductor according to a preferred embodiment of the present invention;

FIG. 3 is an exploded schematic view of a common mode inductor of a preferred embodiment of the present invention;

fig. 4 is one of the schematic structural diagrams of the copper sheet component in the common mode inductor according to the preferred embodiment of the present invention;

fig. 5 is a second schematic diagram of the structure of the copper sheet component in the common mode inductor according to the preferred embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the utility model or its application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for either a fixed function or a circuit/signal communication function.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1 to 5, a preferred embodiment of the present invention discloses a common mode inductor, which includes an insulating substrate 10, a magnetic core (not shown), a copper sheet assembly, an insulating spacer unit 30 and an insulating base 50, wherein the magnetic core is disposed in an inner cavity of the insulating substrate 10, the copper sheet assembly includes a winding copper sheet module 20 and a connecting copper sheet module 40, and a plurality of pins are disposed in the copper sheet assembly; the winding copper sheet module 20 comprises two groups of winding copper sheet units 21 and 22, the two groups of winding copper sheet units 21 and 22 respectively comprise three winding copper sheets 211 and 221, and the two groups of winding copper sheet units 21 and 22 respectively penetrate through two sides of the insulation base body 10; the insulation spacer unit 30 is arranged between the two groups of winding copper sheet units 21 and 22; the connecting copper sheet module 40 comprises two groups of connecting copper sheet units 41 and 42, the connecting copper sheet unit 41 comprises two connecting copper sheets 411, the connecting copper sheet unit 42 comprises three connecting copper sheets 421, the two connecting copper sheets 411 are used for connecting the winding copper sheets 211 in the corresponding winding copper sheet unit 21, and the three connecting copper sheets 421 are used for connecting the winding copper sheets 221 in the corresponding winding copper sheet unit 22; the insulation base 50 is disposed at the bottom of the winding copper sheet module 20 (for example, the insulation base 50 may be fixedly connected with the insulation spacer unit 30 by welding), and a plurality of first holes 51 are disposed on the insulation base 50 to expose each pin in the winding copper sheet module.

In this embodiment, the winding copper sheets 211 and 221 are both U-shaped, and both ends of the U-shaped structure are provided with the protruding portion 23 and/or the pin 24, wherein both ends of the U-shaped structure of two winding copper sheets 211 are respectively the protruding portion 23 and the pin 24, and both ends of the U-shaped structure of the other winding copper sheet 211 are both the protruding portion 23; both ends of the U-shaped structure of the two winding copper sheets 221 are the protruding portions 23, and both ends of the U-shaped structure of the other winding copper sheet 221 are the protruding portions 23 and the pins 24.

Correspondingly, two second holes 43 are respectively formed in the two connecting copper sheets 411, two second holes 43 are respectively formed in two connecting copper sheets 421 of the three connecting copper sheets 421, one second hole 43 is formed in one end of the other connecting copper sheet 421, and one pin 44 is formed in the other end of the other connecting copper sheet 421; each second hole 43 is used for connecting the protruding portions 23 of the end portions of every two adjacent winding copper sheets 211, 221 in each group of winding copper sheet units 21, 22. Further, the second holes 43 of the connecting copper sheets 411 and 421 and the protrusions 23 at the ends of the winding copper sheets 211 and 221 are connected by soldering or riveting, or by soldering and riveting.

The insulating spacer unit 30 includes a first insulating spacer 31, a second insulating spacer 32 and a third insulating spacer 33, the first insulating spacer 31 and the second insulating spacer 32 are respectively vertically connected to both sides of the third insulating spacer 33, the first insulating spacer 31 is disposed between the two sets of winding copper sheet units 21 and 22, the second insulating spacer 32 is disposed between the two sets of connection copper sheet units 41 and 42, and a plurality of third holes 331 are provided on the third insulating spacer 33 so that the bosses 23 and/or the pins 24 at both ends of the winding copper sheets 211 and 221 can pass through the respective corresponding third holes 331.

The magnetic core is a nanocrystalline magnetic core and is arranged in the insulating base body 10, a plurality of positioning ribs 11 are arranged on the insulating base body 10, and the plurality of positioning ribs 11 are used for positioning each winding copper sheet 211 and 221 in the two groups of winding copper sheet units 21 and 22.

In this embodiment, two pins 24 are disposed on the winding copper sheet unit 21, and are disposed at the end of the winding copper sheet 211, while one pin 24 is disposed on the winding copper sheet unit 22, and is disposed at the end of the winding copper sheet 221, and the other pin 44 is disposed at the end of the connecting copper sheet 421; in this embodiment, one of the pins is disposed on the connecting copper sheet 421, so as to avoid short-circuiting of solder due to too close distance between the pins, and in an actual manufacturing process, the pins corresponding to each group of winding copper sheet units may be disposed on the winding copper sheets and/or the connecting copper sheets as needed. In this embodiment, each pin is in a tooth-shaped structure, so that the common mode inductor and the circuit PCB can be fixed by soldering tin conveniently, and in addition, the winding copper sheets 211 and 221 and the connection copper sheets 411 and 421 are all spray tin copper sheets.

According to the common mode inductor provided by the preferred embodiment of the utility model, the required number of turns is achieved by connecting the copper sheets with the winding copper sheets, a winding process of a machine can be omitted by adopting a winding copper sheet crimping structure, the corresponding assembly operation is simple directly, and the manufacturing efficiency is improved; the winding copper sheet can be manufactured through a die, tin is sprayed on the surface of the winding copper sheet for placing and oxidizing, and pins are made into teeth (the welding is convenient for customers); in addition, the insulation substrate and the insulation spacer are positioned and isolated, so that insulation between winding copper sheets is ensured; the winding copper sheet compression joint structure is small in manufacturing volume, and space is saved by arranging boards conveniently in customer space; the winding copper sheet crimping structure design product has the advantages of good consistency, convenience in quality control and high production efficiency.

The background of the utility model may contain background information related to the problem or environment of the present invention rather than the prior art described by others. Accordingly, the inclusion in the background section is not an admission of prior art by the applicant.

The foregoing is a more detailed description of the utility model in connection with specific/preferred embodiments and is not intended to limit the practice of the utility model to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the utility model, and these substitutions and modifications should be considered to fall within the scope of the utility model. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the utility model as defined by the appended claims.

Claims (10)

1. A common mode inductor is characterized by comprising an insulation base body, a magnetic core, a copper sheet assembly, an insulation spacer unit and an insulation base, wherein the magnetic core is arranged in an inner cavity of the insulation base body, the copper sheet assembly comprises a winding copper sheet module and a connection copper sheet module, a plurality of pins are arranged in the copper sheet assembly, the winding copper sheet module comprises two groups of winding copper sheet units, each group of winding copper sheet units comprises a plurality of winding copper sheets, the two groups of winding copper sheet units are respectively inserted into two sides of the insulation base body, the insulation spacer unit is arranged between the two groups of winding copper sheet units, the connection copper sheet module comprises two groups of connection copper sheet units, each group of connection copper sheet units respectively comprises a plurality of connection copper sheets, the plurality of connection copper sheets in each group of connection copper sheet units are respectively used for connecting the winding copper sheets in each corresponding group of winding copper sheet units, the insulating base is connected and arranged at the bottom of the winding copper sheet module, and a plurality of first holes are formed in the insulating base to expose all pins in the copper sheet module.

2. A common-mode inductor according to claim 1, characterized in that the winding copper sheet is U-shaped structure, and the two ends of the U-shaped structure are provided with protrusions and/or pins.

3. A common mode inductor according to claim 2, characterized in that at least part of the connecting copper sheets are provided with two second holes, and the two second holes are respectively used for connecting the protruding parts of the end parts of two adjacent winding copper sheets in the winding copper sheet units.

4. A common mode inductor according to claim 3, characterized in that at least part of the connecting copper sheet units are provided with a second hole at one end and a pin at the other end, and the second hole is used for connecting the protruding part of the end part of any one of the winding copper sheets in the winding copper sheet units.

5. The common mode inductor according to claim 2, wherein the insulation spacer units comprise a first insulation spacer, a second insulation spacer and a third insulation spacer, the first insulation spacer and the second insulation spacer are respectively vertically connected to two sides of the third insulation spacer, the first insulation spacer is arranged between two groups of the winding copper sheet units, the second insulation spacer is arranged between two groups of the connection copper sheet units, and a plurality of third holes are arranged on the third insulation spacer to enable bosses and/or pins at two ends of the winding copper sheets to pass through the corresponding third holes.

6. A common-mode inductor according to claim 1, characterized in that the connection copper sheets are connected with each winding copper sheet by soldering and/or riveting.

7. A common-mode inductor according to claim 1, wherein a plurality of positioning ribs are provided on the insulating base, and the plurality of positioning ribs are used for positioning each winding copper sheet in the two sets of winding copper sheet units.

8. A common-mode inductor according to claim 1, characterized in that the magnetic core is a nanocrystalline magnetic core.

9. A common-mode inductor according to claim 1, characterized in that the winding copper sheets and the connecting copper sheets are respectively sprayed tin copper sheets.

10. A common-mode inductor according to any one of claims 1 to 9, characterized in that the pins are tooth-like structures.

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