CN214797045U - Low-impedance transformer magnetic core grounding structure - Google Patents
Low-impedance transformer magnetic core grounding structure Download PDFInfo
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- CN214797045U CN214797045U CN202120580358.1U CN202120580358U CN214797045U CN 214797045 U CN214797045 U CN 214797045U CN 202120580358 U CN202120580358 U CN 202120580358U CN 214797045 U CN214797045 U CN 214797045U
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Abstract
The utility model discloses a transformer magnetic core grounding structure with low impedance, which comprises a framework, a first E-shaped magnetic core, a second E-shaped magnetic core, a grounding lead and an insulating adhesive tape; the framework is provided with a grounding pin and a magnetic core mounting through hole; the center pillar of the first E-shaped magnetic core and the center pillar of the second E-shaped magnetic core respectively extend into the magnetic core mounting through hole from openings at two ends of the magnetic core mounting through hole; the conducting section of the grounding lead is in contact conduction with the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core, and the grounding section of the grounding lead is connected with the grounding pin of the framework; the insulating adhesive tape is wound on the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core, and the insulating adhesive tape covers the conducting section of the grounding lead. The utility model discloses can make magnetic core ground connection reliable to improve the EMI performance of transformer.
Description
Technical Field
The utility model relates to a transformer field especially indicates a transformer core ground structure of low impedance.
Background
A Transformer (Transformer) is a device for changing alternating voltage by using the principle of electromagnetic induction, and the main components are a framework, a primary coil, a secondary coil and a magnetic core, and the magnetic core of the Transformer is generally formed by splicing two magnetic core blocks.
The magnetic core of the existing transformer can be connected with the grounding pin on the framework, so that the magnetic core of the transformer can be grounded when the transformer is used, and electromagnetic interference (EMI) is effectively reduced. However, the magnetic core of the existing transformer is generally formed by splicing two magnetic core blocks, the two magnetic core blocks are abutted and fixed through an insulating tape, and one of the magnetic core blocks is connected with a grounding pin of the framework through a lead. After the transformer with the structure is soaked, poor contact is easy to occur between the two magnetic core blocks, so that the two magnetic core blocks have different impedances to the ground, the grounding effect of the magnetic core is poor, and the EMI performance of the transformer is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low impedance's magnetic core of transformer ground structure, it can make the magnetic core of transformer reliably ground connection.
In order to achieve the above purpose, the solution of the present invention is:
a transformer magnetic core grounding structure with low impedance comprises a framework, a magnetic core, a grounding lead and an insulating tape; the framework is provided with a grounding pin and a magnetic core mounting through hole; the magnetic core comprises a first E-shaped magnetic core and a second E-shaped magnetic core, and a center pillar of the first E-shaped magnetic core and a center pillar of the second E-shaped magnetic core respectively extend into the magnetic core mounting through hole from openings at two ends of the magnetic core mounting through hole; the grounding lead comprises a grounding section and a conducting section connected with the grounding section, the conducting section is in contact conduction with the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core, and the grounding section is connected with a grounding pin of the framework; the insulating adhesive tape is wound on the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core, and the insulating adhesive tape covers the conducting section of the grounding lead.
The grounding lead is made of copper.
And the grounding section of the grounding lead is connected with the grounding pin of the framework in a welding manner.
The conducting section of the grounding lead surrounds the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core.
After the scheme is adopted, the conduction section of the grounding lead wire is in contact conduction with the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core so that the first E-shaped magnetic core and the second E-shaped magnetic core are conducted through the conduction section, and the grounding section of the grounding lead wire is connected with the grounding pin of the framework, so that the first E-shaped magnetic core and the second E-shaped magnetic core are grounded together through the grounding lead wire and the grounding pin; and the utility model discloses an insulating tape covers the section that switches on of ground lead and can prevent to appear when the transformer is impregnated and contain the infiltration of impregnation liquid to the condition between section and first E type magnetic core and the second E type magnetic core that switches on, guarantees that the section that switches on and first E type magnetic core and second E type magnetic core contact well to ensure first E type magnetic core and second E type magnetic core ground connection reliably.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a partial structure of the present invention (hidden insulating tape).
Description of reference numerals:
skeleton 1, ground connection pin 11, magnetic core 2, first E type magnetic core 21, second E type magnetic core 22, ground lead 3, ground connection section 31, conduction section 32, insulating tape 4.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
As shown in fig. 1 and fig. 2, the present invention discloses a transformer core grounding structure with low impedance, which includes a framework 1, a magnetic core 2, a grounding lead 3 and an insulating tape 4; the framework 1 is provided with a grounding pin 11 and a magnetic core mounting through hole; the magnetic core 2 comprises a first E-shaped magnetic core 21 and a second E-shaped magnetic core 22, and a center pillar of the first E-shaped magnetic core 21 and a center pillar of the second E-shaped magnetic core 22 respectively extend into the magnetic core mounting through hole from openings at two ends of the magnetic core mounting through hole; the grounding lead 3 comprises a grounding section 31 and a conducting section 32 connected with the grounding section 31, the grounding section 31 is connected with the grounding pin 11 of the framework 1, and the conducting section 31 is in contact conduction with the outer side of the first E-shaped magnetic core 21 and the outer side of the second E-shaped magnetic core 22; the insulating tape 4 is wound around the outer sides of the first E-shaped magnetic core 21 and the second E-shaped magnetic core 22 to fix the first E-shaped magnetic core 21 and the second E-shaped magnetic core 22, and the insulating tape 4 covers the conducting section 32 of the grounding lead 3 to attach the conducting section 32 to the outer sides of the first E-shaped magnetic core 21 and the second E-shaped magnetic core 21.
In the present invention, the conducting section 32 of the grounding lead 3 is in contact conduction with the outside of the first E-shaped magnetic core 21 and the outside of the second E-shaped magnetic core 22 so that the first E-shaped magnetic core 21 and the second E-shaped magnetic core 22 are conducted through the conducting section 32, and the grounding section 31 of the grounding lead 3 is connected to the grounding pin 11 of the framework 1, so that the first E-shaped magnetic core 21 and the second E-shaped magnetic core 22 can be grounded together through the grounding lead 3 and the grounding pin 11; the insulating tape 4 covers the conducting section 32 of the grounding lead 3, so that the situation that the impregnation liquid permeates into the space between the conducting section 32 and the first E-shaped magnetic core 21 and the second E-shaped magnetic core 22 when the transformer is impregnated can be prevented, the conducting section 32 is ensured to be in good contact with the first E-shaped magnetic core 21 and the second E-shaped magnetic core 22, and the first E-shaped magnetic core 21 and the second E-shaped magnetic core 22 are ensured to be grounded reliably.
The utility model discloses in, ground lead 3's material is copper, and copper has good electric conductive property and makes first E type magnetic core 21 and second E type magnetic core 22 switch on section 32 well through ground lead.
The utility model discloses in, the ground connection section 31 of ground lead 3 links to each other with 11 welding of the ground connection pin of skeleton 1, makes ground connection section 31 and ground connection pin 11 be connected reliable and stable like this.
The utility model discloses in, the section 32 that switches on of ground lead 3 can encircle the outside of first E type magnetic core 21 and second E type magnetic core 22 for it is big with the area of contact of first E type magnetic core 21 and second E type magnetic core 22 to switch on section 32, and it is good to guarantee to switch on section 32 and first E type magnetic core 21 and second E type magnetic core 22.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (4)
1. The utility model provides a transformer core ground structure of low impedance which characterized in that: comprises a framework, a magnetic core, a grounding lead and an insulating tape;
the framework is provided with a grounding pin and a magnetic core mounting through hole; the magnetic core comprises a first E-shaped magnetic core and a second E-shaped magnetic core, and a center pillar of the first E-shaped magnetic core and a center pillar of the second E-shaped magnetic core respectively extend into the magnetic core mounting through hole from openings at two ends of the magnetic core mounting through hole;
the grounding lead comprises a grounding section and a conducting section connected with the grounding section, the conducting section is in contact conduction with the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core, and the grounding section is connected with a grounding pin of the framework;
the insulating adhesive tape is wound on the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core, and the insulating adhesive tape covers the conducting section of the grounding lead.
2. A low impedance transformer core grounding structure as claimed in claim 1 wherein: the grounding lead is made of copper.
3. A low impedance transformer core grounding structure as claimed in claim 1 wherein: and the grounding section of the grounding lead is connected with the grounding pin of the framework in a welding manner.
4. A low impedance transformer core grounding structure as claimed in claim 1 wherein: the conducting section of the grounding lead surrounds the outer sides of the first E-shaped magnetic core and the second E-shaped magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120580358.1U CN214797045U (en) | 2021-03-22 | 2021-03-22 | Low-impedance transformer magnetic core grounding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120580358.1U CN214797045U (en) | 2021-03-22 | 2021-03-22 | Low-impedance transformer magnetic core grounding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214797045U true CN214797045U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120580358.1U Active CN214797045U (en) | 2021-03-22 | 2021-03-22 | Low-impedance transformer magnetic core grounding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214797045U (en) |
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2021
- 2021-03-22 CN CN202120580358.1U patent/CN214797045U/en active Active
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