CN209804406U - SMD magnetic core original paper structure of stable performance - Google Patents
SMD magnetic core original paper structure of stable performance Download PDFInfo
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- CN209804406U CN209804406U CN201921016871.7U CN201921016871U CN209804406U CN 209804406 U CN209804406 U CN 209804406U CN 201921016871 U CN201921016871 U CN 201921016871U CN 209804406 U CN209804406 U CN 209804406U
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Abstract
The utility model relates to a magnetic core original paper technical field specifically is a SMD magnetic core original paper structure of stable performance, the lower extreme welding of main magnetic core has first electroplating pad, second electroplating pad, third electroplating pad, fourth electroplating pad, fifth electroplating pad, sixth electroplating pad, seventh electroplating pad and eighth electroplating pad, the coiling has first wire, second wire, third wire, fourth wire, fifth wire and sixth wire on the main magnetic core. The first winding forms the primary winding of the transformer, the second winding forms the secondary winding of the transformer, thereby realizing the coupling transmission of signals, the third winding realizes the suppression and filtering of the common mode noise coupled to the secondary winding of the transformer, the flat magnetic core, the main magnetic core, the magnetic conductive adhesive layer and the winding structure have the functions of signal coupling and high-voltage isolation of the transformer, and simultaneously have the suppression and filtering of the common mode noise, thereby realizing the complete function of the SMD magnetic core element.
Description
Technical Field
The utility model relates to a magnetic core original paper technical field specifically is a SMD magnetic core original paper structure of stable performance.
Background
At present, with the rapid development of electronic products, especially the rapid development of network and communication technologies, network modules and communication modules for controlling network and communication are also continuously developed. The network module and the communication module are usually provided with transformers, which are mainly used to provide anti-matching and isolation anomalies. For example, when the impedances of the devices connected to the two ends of the network cable are not matched, the impedances are adjusted by the transformer, so that the two ends of the network cable can achieve impedance matching; when the voltages at the two ends of the network cable are inconsistent, namely abnormal voltages are generated, the network equipment or the communication equipment connected with the network cable is prevented from being damaged through the protection of the transformer. In the prior art, an SMD magnetic core generally includes an insulating body, two rows of metal pins fixed to the insulating body, and a coil winding electrically connected to the metal pins, where the metal pins include a connecting portion embedded in the insulating body and a welding portion extending outside the insulating body. Coil winding among the current transformer is provided with metal winding, twines through this metal winding and carries out soldering tin again behind the metal pin, and this soldering tin technology is loaded down with trivial details complicated, and the rejection rate is high, and the material uses more, and is with high costs, is unfavorable for production and marketing. Therefore, an SMD magnetic core element structure with stable performance is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a SMD magnetic core original paper structure of stable performance to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
The utility model provides a SMD magnetic core original paper structure of stable performance, includes dull and stereotyped magnetic core, main magnetic core and is used for the magnetic conduction glue film that main magnetic core and dull and stereotyped magnetic core bonded, the lower extreme welding of main magnetic core has first electroplating pad, second electroplating pad, third electroplating pad, fourth electroplating pad, fifth electroplating pad, sixth electroplating pad, seventh electroplating pad and eighth electroplating pad, the coiling has first wire, second wire, third wire, fourth wire, fifth wire and sixth wire on the main magnetic core.
Preferably, the first wire and the second wire are wound to form a first winding which is wound on the main magnetic core, the starting point of the first wire is positioned on the second electroplating bonding pad, the end point of the first wire is positioned on the sixth electroplating bonding pad, the starting point of the second wire is positioned on the third electroplating bonding pad, the end point of the second wire is positioned on the fifth electroplating bonding pad, and the first wire and the second wire are wound by adopting a double-wire parallel winding or double-wire separate winding process.
preferably, the third wire and the fourth wire are wound to form a second winding which is wound on the main magnetic core, the winding direction of the second winding is opposite to the winding direction of the first winding, the starting point of the third wire is positioned on the first electroplating bonding pad, the end point of the third wire is positioned on the sixth electroplating bonding pad, the starting point of the fourth wire is positioned on the third electroplating bonding pad, the end point of the fourth wire is positioned on the fourth electroplating bonding pad, and the third wire and the fourth wire are wound by adopting a double-wire parallel winding or double-wire separate winding process.
Preferably, the fifth wire and the sixth wire are wound to form a third winding which is wound on the main magnetic core, the starting point of the fifth wire is positioned on the fourth electroplating bonding pad, the end point of the fifth wire is positioned on the seventh electroplating bonding pad, the starting point of the sixth wire is positioned on the fifth electroplating bonding pad, the end point of the sixth wire is positioned on the eighth electroplating bonding pad, and the fifth wire and the sixth wire are wound by adopting a double-wire winding process.
Preferably, the flat magnetic core is sintered into a cuboid structure by a soft magnetic material, and the initial permeability of the flat magnetic core is 500-10000.
Preferably, the main magnetic core is formed by sintering a soft magnetic material, and the initial permeability of the main magnetic core is 500-10000.
Preferably, the magnetic conductive adhesive layer is made of epoxy resin adhesive and magnetic conductive iron powder which are mixed and stirred, and the particle diameter of the epoxy resin adhesive and the magnetic conductive iron powder is 0.1-100 μm.
Preferably, the top of the main magnetic core has three protruded core surfaces for providing a winding space and a joint surface for bonding the core combination.
Compared with the prior art, the beneficial effects of the utility model are that: the SMD magnetic core original piece structure with stable performance is characterized in that a first winding forms the primary side of a transformer, a second winding forms the secondary side of the transformer, and therefore coupling transmission of signals is achieved, a third winding achieves the suppression and filtering of common mode noise coupled to the secondary side of the transformer, and the flat magnetic core, the main magnetic core, the magnetic conductive adhesive layer and the winding structure have the functions of signal coupling and high-voltage isolation of the existing transformer and the suppression and filtering of the common mode noise, so that the complete function of the SMD magnetic core original piece is achieved.
Drawings
FIG. 1 is a schematic view of the assembly structure of the present invention;
FIG. 2 is a schematic view of the bottom of the main magnetic core of the present invention;
FIG. 3 is a schematic view of the winding structure of the present invention;
fig. 4 is a schematic view of the top three-dimensional structure of the main magnetic core of the present invention.
in the figure: the magnetic core comprises a flat magnetic core 1, a magnetic conductive glue layer 2, a main magnetic core 3, a first conducting wire 301, a second conducting wire 302, a third conducting wire 303, a fourth conducting wire 304, a fifth conducting wire 305, a sixth conducting wire 306, a first electroplating bonding pad 311, a second electroplating bonding pad 312, a third electroplating bonding pad 313, a fourth electroplating bonding pad 314, a fifth electroplating bonding pad 315, a sixth electroplating bonding pad 316, a seventh electroplating bonding pad 317 and an eighth electroplating bonding pad 318.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
An SMD magnetic core original structure with stable performance comprises a flat magnetic core 1, a main magnetic core 3 and a magnetic conductive adhesive layer 2 for bonding the main magnetic core 3 and the flat magnetic core 1, wherein the flat magnetic core 1 is sintered into a cuboid structure by a soft magnetic material, the initial magnetic conductivity of the flat magnetic core 1 is 500-10000, the main magnetic core 3 is sintered and formed by the soft magnetic material, the initial magnetic conductivity of the main magnetic core 3 is 500-10000, the top of the main magnetic core 3 is provided with three protruding magnetic core surfaces for providing a winding space and a bonding surface for the magnetic core combination bonding, the magnetic conductive adhesive layer 2 is formed by mixing and stirring epoxy resin adhesive and magnetic conductive iron powder, the particle diameter of the epoxy resin adhesive and the magnetic conductive iron powder is 0.1-100 mu m, and the lower end of the main magnetic core 3 is welded with a first electroplating bonding pad 311, a second electroplating bonding pad 312, a third electroplating bonding pad 313, a fourth electroplating bonding pad 314, a fifth bonding pad 315, And sixth, seventh and eighth plating pads 316, 317 and 318 for bonding the start and end points of the winding to provide a bonding platform for electrical connection of the lines, wherein the main core 3 is wound with first, second, third, fourth, fifth and sixth wires 301, 302, 303, 304, 305 and 306.
the first conducting wire 301 and the second conducting wire 302 are wound to form a first winding which is wound on the main magnetic core 3, the starting point of the first conducting wire 301 is positioned on the second electroplating bonding pad 312, the end point of the first conducting wire 301 is positioned on the sixth electroplating bonding pad 316, the starting point of the second conducting wire 302 is positioned on the third electroplating bonding pad 313, the end point of the second conducting wire 302 is positioned on the fifth electroplating bonding pad 315, and the first conducting wire 301 and the second conducting wire 302 are wound by adopting a double-wire parallel winding or double-wire partial winding process; the third conducting wire 303 and the fourth conducting wire 304 are wound to form a second winding which is wound on the main magnetic core 3, the winding direction of the second winding is opposite to the winding direction of the first winding, the starting point of the third conducting wire 303 is positioned on the first electroplating bonding pad 311, the end point is positioned on the sixth electroplating bonding pad 316, the starting point of the fourth conducting wire 304 is positioned on the third electroplating bonding pad 313, the end point is positioned on the fourth electroplating bonding pad 314, and the third conducting wire 303 and the fourth conducting wire 304 are wound by adopting a double-wire parallel winding or double-wire partial winding process; the fifth conducting wire 305 and the sixth conducting wire 306 are wound to form a third winding which is wound on the main magnetic core 3, the starting point of the fifth conducting wire 305 is positioned on the fourth electroplating bonding pad 314, the terminal point of the fifth conducting wire is positioned on the seventh electroplating bonding pad 317, the starting point of the sixth conducting wire 306 is positioned on the fifth electroplating bonding pad 315, the terminal point of the sixth conducting wire 306 is positioned on the eighth electroplating bonding pad 318, and the fifth conducting wire 305 and the sixth conducting wire 306 are wound by adopting a double-wire winding process.
The SMD magnetic core original piece structure with stable performance is characterized in that a first winding forms the primary side of a transformer, a second winding forms the secondary side of the transformer, and therefore coupling transmission of signals is achieved, a third winding achieves the suppression and filtering of common mode noise coupled to the secondary side of the transformer, the flat magnetic core 1, the main magnetic core 3, the magnetic conductive adhesive layer 2 and the winding structure achieve the signal coupling and high-voltage isolation functions of the existing transformer and also achieve the suppression and filtering of the common mode noise, and therefore the complete function of the SMD magnetic core original piece is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a SMD magnetic core original paper structure of stable performance, includes dull and stereotyped magnetic core (1), main magnetic core (3) and is used for magnetic conduction glue film (2) that main magnetic core (3) and dull and stereotyped magnetic core (1) bond, its characterized in that: the lower end of the main magnetic core (3) is welded with a first electroplating bonding pad (311), a second electroplating bonding pad (312), a third electroplating bonding pad (313), a fourth electroplating bonding pad (314), a fifth electroplating bonding pad (315), a sixth electroplating bonding pad (316), a seventh electroplating bonding pad (317) and an eighth electroplating bonding pad (318), and a first lead (301), a second lead (302), a third lead (303), a fourth lead (304), a fifth lead (305) and a sixth lead (306) are wound on the main magnetic core (3).
2. A stable SMD core element configuration according to claim 1, wherein: the first conducting wire (301) and the second conducting wire (302) are wound to form a first winding, the first winding is wound on the main magnetic core (3), the starting point of the first conducting wire (301) is located on the second electroplating bonding pad (312), the terminal point of the first conducting wire is located on the sixth electroplating bonding pad (316), the starting point of the second conducting wire (302) is located on the third electroplating bonding pad (313), the terminal point of the second conducting wire is located on the fifth electroplating bonding pad (315), and the first conducting wire (301) and the second conducting wire (302) are wound by adopting a double-wire parallel winding or double-wire split winding process.
3. A stable SMD core element configuration according to claim 1, wherein: the third conducting wire (303) and the fourth conducting wire (304) are wound to form a second winding, the second winding is wound on the main magnetic core (3), the winding direction of the second winding is opposite to the winding direction of the first winding, the starting point of the third conducting wire (303) is located on the first electroplating bonding pad (311), the end point of the third conducting wire is located on the sixth electroplating bonding pad (316), the starting point of the fourth conducting wire (304) is located on the third electroplating bonding pad (313), the end point of the fourth conducting wire is located on the fourth electroplating bonding pad (314), and the third conducting wire (303) and the fourth conducting wire (304) are wound by adopting a double-wire parallel winding or double-wire split winding process.
4. A stable SMD core element configuration according to claim 1, wherein: the fifth conducting wire (305) and the sixth conducting wire (306) are wound to form a third winding, the third winding is wound on the main magnetic core (3), the starting point of the fifth conducting wire (305) is located on the fourth electroplating bonding pad (314), the terminal point of the fifth conducting wire is located on the seventh electroplating bonding pad (317), the starting point of the sixth conducting wire (306) is located on the fifth electroplating bonding pad (315), the terminal point of the sixth conducting wire is located on the eighth electroplating bonding pad (318), and the fifth conducting wire (305) and the sixth conducting wire (306) are wound by adopting a double-wire winding process.
5. A stable SMD core element configuration according to claim 1, wherein: the flat magnetic core (1) is sintered into a cuboid structure by soft magnetic materials, and the initial magnetic conductivity of the flat magnetic core (1) is 500-10000.
6. A stable SMD core element configuration according to claim 1, wherein: the main magnetic core (3) is formed by sintering soft magnetic materials, and the initial magnetic permeability of the main magnetic core (3) is 500-10000.
7. A stable SMD core element configuration according to claim 1, wherein: the magnetic conductive adhesive layer (2) is made of epoxy resin adhesive and magnetic conductive iron powder which are mixed and stirred, and the particle diameters of the epoxy resin adhesive and the magnetic conductive iron powder are 0.1-100 mu m.
8. The SMD magnetic core element structure of claim 6, wherein: the top of the main magnetic core (3) is provided with three protruded magnetic core surfaces for providing a winding space and a joint surface for the magnetic core combination and bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921016871.7U CN209804406U (en) | 2019-07-02 | 2019-07-02 | SMD magnetic core original paper structure of stable performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921016871.7U CN209804406U (en) | 2019-07-02 | 2019-07-02 | SMD magnetic core original paper structure of stable performance |
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| CN209804406U true CN209804406U (en) | 2019-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164659A (en) * | 2019-07-02 | 2019-08-23 | 鸿磬电子（东莞）有限公司 | A kind of SMD magnetic core original part structure that performance is stable |
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- 2019-07-02 CN CN201921016871.7U patent/CN209804406U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164659A (en) * | 2019-07-02 | 2019-08-23 | 鸿磬电子（东莞）有限公司 | A kind of SMD magnetic core original part structure that performance is stable |
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