CN210743757U - High-frequency transformer shielding structure - Google Patents
High-frequency transformer shielding structure Download PDFInfo
- Publication number
- CN210743757U CN210743757U CN201921130325.6U CN201921130325U CN210743757U CN 210743757 U CN210743757 U CN 210743757U CN 201921130325 U CN201921130325 U CN 201921130325U CN 210743757 U CN210743757 U CN 210743757U
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- CN
- China
- Prior art keywords
- coil
- winding
- shielding
- shielding structure
- frequency transformer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 94
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims 5
- 230000000903 blocking effect Effects 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000011889 copper foil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- Regulation Of General Use Transformers (AREA)
Abstract
The utility model provides a high frequency transformer shielding structure belongs to the electronic transformer field. The utility model provides a high frequency transformer shielding structure, includes the coil skeleton, and the coil skeleton includes winding portion, is equipped with the coil on the winding portion, and the coil includes coil winding and the shielding winding that is used for reducing high frequency production interference in the transformer, and shielding winding lead wire one end is connected with the earthing terminal, and the other end is unsettled, and shielding winding is equipped with a set ofly at least. The time and the manpower are saved, the interference generated in the transformer due to high frequency can be effectively prevented, the circuit compensation requirement is low, and the cost is reduced.
Description
Technical Field
The utility model relates to an electronic transformer field, concretely relates to high frequency transformer shielding structure.
Background
The electronic transformer is an element which is matched with an electronic complete machine and serves electronic circuits. Along with the development of the electronic industry, the electronic transformer industry has long-term progress, particularly, scientific technology is rapidly advanced in recent 20 years, the electronic technology is widely applied to various fields, the demand of broad users on consumer electronic products is gradually increased, and the electronic transformer industry is developed indefinitely.
The electronic transformer applied at present mainly works between high frequency 30 KHz-100 KHz, which can easily cause the increase of distributed capacitance and leakage inductance of the electronic transformer, can generate interference factors to the circuit work, influence the stability of products and not easily meet the EMI requirement, and has high requirement on circuit compensation and increased cost.
In the prior art, in patent application No. 201821047392.7, an anti-interference multi-winding transformer includes a coil bobbin provided with a winding portion; the E-shaped magnetic core is arranged on the coil framework; the coil is wound outside the winding part; and the first shielding layer comprises a first copper foil coil arranged outside the E-shaped magnetic core and the coil. In the technical scheme, the first copper foil coil forms a closed loop outside the E-shaped magnetic core and the coil so as to shield the interference of high-frequency signals to the coil. However, the interference of the high-frequency signal to the coil is shielded by using the copper foil coil, the copper foil coil is manually formed into a closed loop, the time and the labor are wasted, and the interference effect on the shielding of the high-frequency signal is not obvious.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a shielding structure of high frequency transformer saves time and manpower, can effectively prevent because of the interference that the high frequency produced in the transformer, and circuit compensation requires lowly, reduce cost.
The utility model discloses above-mentioned technical purpose is realized through following technical scheme, a high frequency transformer shielding structure, including coil skeleton, coil skeleton includes winding portion, winding portion is equipped with the coil, the coil includes coil winding and is arranged in reducing the shielding winding that high frequency produced interference in the transformer, shielding winding lead wire one end is connected with the earthing terminal, and the other end is unsettled, shielding winding is equipped with a set of at least.
A high-frequency transformer shielding structure comprises a coil framework, wherein a winding part for winding a coil is arranged on the coil framework, the coil includes a coil winding and a shield winding for reducing interference generated in the transformer by high frequency, the shielding winding is positioned on the coil winding, one end of the shielding winding is electrically connected with a grounding end, and the other end of the shielding winding is suspended without generating changed current to form a shielding layer, one end of the shielding winding is grounded, the interference source generated by the high frequency can be shielded by the lead grounding, in practical production, the shielding winding and the coil winding can be directly wound on the winding part through a machine, the winding way and the winding density of the shielding winding and the coil winding are the same, the shielding winding is at least provided with one group in the coil, so that the interference generated by high frequency in the transformer can be effectively prevented.
Preferably, the coil winding includes a primary coil in contact with an outer surface of the winding portion, and the shield winding is in contact with the primary coil.
As an optimization of the present invention, the shielding winding is provided with a set.
As the utility model discloses a preferred, the shielding winding with the coil winding material is the copper wire.
In the technical scheme, the shielding winding is in contact with the primary coil, so that the high-frequency shielding effect can be better achieved, the shielding coil is only provided with one group, the material of the shielding winding is the same as that of the coil winding, the material can be saved, and the production efficiency is improved.
As the utility model discloses a preferred, coil skeleton is still including being located the stop part at winding part both ends, the stop part surface arrives the distance on winding part surface is more than or equal to the coil surface arrives the distance on winding part surface.
In this technical scheme, be equipped with the stop part on the coil skeleton, the stop part surface reaches the distance on winding part surface is more than or equal to the coil surface reaches the distance on winding part surface the coil winding is in it is to stopping the effect to the winding part, makes the coil winding more regular.
As the utility model discloses a preferred, be equipped with on the coil skeleton and be used for placing the free end platform of magnetic core, be equipped with the pin on the end platform, still be equipped with on the end platform and be on a parallel with run through in the pin direction the lead wire of end platform wears to portal.
In this technical scheme, be equipped with on the end platform and run through the lead wire exit hole of end platform, the lead wire exit hole is located near the pin, the lead wire that passes through in the pin exit hole can with pin direct contact makes the lead wire with the pin is changeed and is connected.
As the utility model discloses a preferred, the coil winding is in on the winding, the lead wire that the coil was drawn forth with the pin links to each other, the coil outside is equipped with and is used for preventing people to electrocute injured insulating part.
As the utility model discloses a preferred, the insulating part includes insulating part one and insulating part two, insulating part one twines on the coil, insulating part two is located a plurality of that the coil is drawn forth on the lead wire.
The utility model discloses in, in order to increase the insulating nature of coil the winding has insulating sticky tape on the coil, by be equipped with insulating sticky tape on the lead wire that the coil was drawn forth.
Drawings
Fig. 1 is the schematic diagram of the transformer structure of the present invention.
Figure 2 is the utility model discloses circle number of turns structure diagram.
Fig. 3 is a schematic view of the shielding structure of the present invention.
In the figure:
1. magnetic core monomer, 2, coil skeleton, 3, pin, 11, magnetic column, 12, magnetic core, 21, winding portion, 22, stop portion, 23, end platform, 24, shielding winding.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
As shown in fig. 1, fig. 2 and fig. 3, a shielding structure of a high frequency transformer includes a bobbin 2, the bobbin 2 is provided with a winding portion 21 for winding a coil, the coil includes a coil winding and a shielding winding 24 for reducing interference generated by high frequency in the transformer, the shielding winding 24 is disposed on the coil winding, one end of the shielding winding 24 is electrically connected to a ground terminal, and the other end is suspended without generating a variable current to form a shielding layer, one end of the shielding winding 24 is grounded, an interference source generated by high frequency can be shielded by lead grounding, in actual production, the shielding winding 24 and the coil winding can be directly wound on the winding part 21 by a machine, the winding way and the winding density of the shielding winding 24 and the coil winding are the same, the time can be effectively saved, the manpower is reduced, and the shielding winding 24 is at least provided with one group in the coil, so that the interference generated by high frequency in the transformer can be effectively prevented.
In this technical scheme, shielding winding 24 and primary contact, shielding winding 24 twines on the primary, can be better reach the effect of shielding the high frequency, and shielding coil only is equipped with a set ofly, and shielding winding 24 is the same with coil winding material, and the material is the copper wire can save material, improves production efficiency.
In this technical scheme, coil skeleton 2 is equipped with stop part 22, and the distance that stop part 22 surface is greater than or equal to coil surface to the distance on winding part 21 surface, and it is to the effect of stopping at the winding part of coil winding, makes the coil winding more regular.
In this technical scheme, be equipped with the end platform 23 that is used for placing magnetic core monomer 1 on the coil skeleton, be equipped with pin 3 on the end platform 23, be equipped with the lead wire that runs through the end platform on the end platform 23 and wear the hole, the lead wire is worn to be located near pin 3, the lead wire that passes through in the hole can with pin 3 direct contact, make lead wire and pin 3 change to be connected, the coil outside is equipped with and is used for preventing people from electrocuted injured insulating part.
In the technical scheme, in order to increase the insulativity of the coil, an insulating tape is wound on the coil, and a lead led out from the coil is provided with the insulating tape.
Claims (8)
1. The utility model provides a high frequency transformer shielding structure, includes coil skeleton, coil skeleton (2) are including winding portion (21), be equipped with the coil on winding portion (21), its characterized in that, the coil includes coil winding and shielding winding (24) that are used for reducing high frequency production interference in the transformer, shielding winding (24) lead wire one end is connected with the earthing terminal, and the other end is unsettled, shielding winding (24) are equipped with a set ofly at least.
2. A high-frequency transformer shielding structure according to claim 1, wherein said coil winding includes a primary coil in contact with an outer surface of said winding portion (21), and said shielding winding is in contact with said primary coil.
3. A high-frequency transformer shielding structure according to claim 2, characterized in that said shielding windings (24) are provided in a set.
4. A high-frequency transformer shielding structure according to claim 3, characterized in that said shielding winding (24) and said coil winding are both made of copper wire.
5. A high frequency transformer shielding structure according to claim 1, wherein said bobbin (2) further comprises a blocking portion (22) at both ends of said winding portion (21), and the distance from the outer surface of said blocking portion (22) to the surface of said winding portion (21) is greater than or equal to the distance from the outer surface of said coil to the surface of said winding portion (21).
6. The shielding structure of a high-frequency transformer according to claim 1, further comprising a magnetic core unit (1), wherein an end table (23) for placing the magnetic core unit is disposed on the coil bobbin (2), a pin (3) is disposed on the end table (23), and a lead through hole penetrating through the end table in a direction parallel to the pin (3) is further disposed on the end table (23).
7. The shielding structure of a high-frequency transformer according to claim 6, wherein said coil is wound on said winding portion (21), a lead wire from said coil is connected to said lead pin (3), and an insulating portion for preventing human from being electrically shocked is provided outside said coil.
8. The shielding structure of claim 7, wherein said insulation portion comprises a first insulation portion and a second insulation portion, said first insulation portion is wound around said coil, and said second insulation portion is located on a plurality of said leads from said coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130325.6U CN210743757U (en) | 2019-07-18 | 2019-07-18 | High-frequency transformer shielding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130325.6U CN210743757U (en) | 2019-07-18 | 2019-07-18 | High-frequency transformer shielding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210743757U true CN210743757U (en) | 2020-06-12 |
Family
ID=71010190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921130325.6U Expired - Fee Related CN210743757U (en) | 2019-07-18 | 2019-07-18 | High-frequency transformer shielding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210743757U (en) |
-
2019
- 2019-07-18 CN CN201921130325.6U patent/CN210743757U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 |