CN114141495A

CN114141495A - Network transformer and electronic equipment

Info

Publication number: CN114141495A
Application number: CN202111452120.1A
Authority: CN
Inventors: 廖江生
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-03-04

Abstract

The invention relates to a network transformer and electronic equipment, the network transformer includes: a circuit board group, a first conducting wire, a second conducting wire, a third conducting wire, a fourth conducting wire, a first magnetic core and a second magnetic core, the first circuit board, the second circuit board, the third circuit board and the fourth circuit board are respectively provided with a first through hole and a second through hole, the first magnetic core is arranged in each first through hole in a penetrating way, the second magnetic core is arranged in each second through hole in a penetrating way, the first lead is sequentially wound and arranged at the outer sides of the first through hole and the second through hole, the second lead is sequentially wound and arranged at the outer sides of the first through hole and the second through hole, the third lead is wound and arranged at the outer side of the second through hole, the fourth lead is wound and arranged at the outer side of the second through hole, and the first wire, the second wire, the third wire and the fourth wire are respectively printed on the first circuit board, the second circuit board, the third circuit board and the fourth circuit board, so that the occupied space is small, the overall height of the network transformer is greatly reduced, and the network transformer can be directly connected with the terminals to form reliable electric connection.

Description

Network transformer and electronic equipment

Technical Field

The invention relates to the technical field of electronic elements, in particular to a network transformer and electronic equipment.

Background

With the rapid development of electronic technology, network magnetic devices such as network transformers applied to networks are widely applied, and with the continuous innovation of electronic technology, efforts are made at home and abroad to improve electronic products, so that the electronic products tend to be more miniaturized, functionalized and superior in performance.

The existing network transformer generally comprises a base provided with a cavity, a magnetic coil and conductive terminals, wherein the magnetic coil is accommodated in the cavity of the base, the conductive terminals are fixed on two sides of the base, one end of each conductive terminal is used for being electrically connected with the magnetic coil, the other end of each conductive terminal is used for being electrically connected with an external circuit, and a lead of the magnetic coil is wound on the conductive terminals after an insulating layer on the surface is removed so as to realize the electrical connection of the magnetic coil and the conductive terminals.

Disclosure of Invention

Accordingly, there is a need for a network transformer and an electronic device.

The technical scheme for solving the technical problems is as follows: a network transformer, comprising: the circuit board comprises a circuit board group, a first conducting wire, a second conducting wire, a third conducting wire, a fourth conducting wire, a first magnetic core and a second magnetic core;

the circuit board group includes: the magnetic circuit comprises a first circuit board, a second circuit board, a third circuit board and a fourth circuit board, wherein the first circuit board, the second circuit board, the third circuit board and the fourth circuit board are respectively provided with a first through hole and a second through hole, a first magnetic core is arranged in each first through hole in a penetrating manner, and a second magnetic core is arranged in each second through hole in a penetrating manner;

the first lead is printed and formed on the first circuit board, and the first lead is sequentially wound on the outer sides of the first through hole and the second through hole;

the second lead is printed and formed on the second circuit board, and the second lead is sequentially wound on the outer sides of the first through hole and the second through hole;

the third lead is printed and formed on the third circuit board and is wound on the outer side of the second through hole;

the fourth conducting wire is printed and formed on the fourth circuit board and is wound on the outer side of the second through hole;

the first lead, the second lead, the third lead and the fourth lead are respectively connected with terminals at two ends.

In one embodiment, further comprising: the first end of the first wire is connected with the first terminal, the second end of the first wire is connected with the second terminal, the first end of the second wire is connected with the third terminal, the second end of the second wire is connected with the second terminal, the first end of the third wire is connected with the fourth terminal, the second end of the third wire is connected with the fifth terminal, the first end of the fourth wire is connected with the sixth terminal, and the second end of the fourth wire is connected with the fifth terminal.

In one embodiment, the number of the first circuit board, the second circuit board, the third circuit board and the fourth circuit board is at least two, and the number of the first circuit board, the number of the second circuit board, the number of the third circuit board and the number of the fourth circuit board are the same.

In one embodiment, the number of the first conducting wires, the second conducting wires, the third conducting wires and the fourth conducting wires is at least two, and the number of the first conducting wires, the number of the second conducting wires, the number of the third conducting wires and the number of the fourth conducting wires are the same.

In one embodiment, the first circuit board, the second circuit board, the third circuit board, and the fourth circuit board have cross-sectional shapes of any one of a circle, a triangle, a rectangle, a hexagon, and an ellipse.

In one embodiment, the first circuit board, the second circuit board, the third circuit board and the fourth circuit board are the same in thickness.

In one embodiment, the magnetic circuit board further comprises a housing, the housing is connected with the circuit board group, and the housing covers the outer sides of the first magnetic core and the second magnetic core.

In one embodiment, the housing is made of plastic.

The present invention also provides an electronic device comprising: the network transformer of any preceding embodiment.

The invention has the beneficial effects that: according to the network transformer provided by the invention, the first through hole and the second through hole are respectively formed on the first circuit board, the second circuit board, the third circuit board and the fourth circuit board, the first magnetic core is arranged in each first through hole in a penetrating manner, the second magnetic core is arranged in each second through hole in a penetrating manner, the first lead is sequentially wound on the outer sides of the first through hole and the second through hole, the second lead is sequentially wound on the outer sides of the first through hole and the second through hole, the third lead is wound on the outer side of the second through hole, the fourth lead is wound on the outer side of the second through hole, and the first lead, the second lead, the third lead and the fourth lead are respectively printed on the first circuit board, the second circuit board, the third circuit board and the fourth circuit board.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic diagram of a network transformer according to an embodiment;

FIG. 2 is a schematic circuit diagram of a network transformer according to an embodiment;

fig. 3 is a schematic perspective exploded view of a network transformer according to an embodiment;

FIG. 4 is a schematic diagram of a first circuit board according to an embodiment;

FIG. 5 is a schematic diagram of a second circuit board according to an embodiment;

FIG. 6 is a schematic diagram of a third circuit board according to one embodiment;

FIG. 7 is a schematic diagram of a fourth circuit board according to one embodiment;

FIG. 8 is a schematic diagram of a network transformer according to another embodiment;

fig. 9 is a schematic circuit diagram of a network transformer according to another embodiment;

fig. 10 is a schematic perspective exploded view of a network transformer according to another embodiment;

FIG. 11 is a schematic diagram of a network transformer according to yet another embodiment;

FIG. 12 is a schematic circuit diagram of a network transformer according to another embodiment;

FIG. 13 is a schematic diagram of a network transformer according to yet another embodiment;

fig. 14 is a schematic perspective exploded view of a network transformer according to still another embodiment.

In the figure, 10, network transformer; 100. a circuit board group; 110. a first circuit board; 115. a sub-circuit board; 120. a second circuit board; 130. a third circuit board; 140. a fourth circuit board; 150. a first package board; 160. a second package board; 200. a first magnetic core; 300. a second magnetic core; 310. a first through hole; 320. a second through hole; 330. a via hole; 400. a first conductive line; 410. a first sub-coil; 500. a second conductive line; 510. a second sub-coil; 600. a third conductive line; 610. a third sub-coil; 700. a fourth conductive line; 710. a fourth sub-coil; 810. a first terminal; 820. a second terminal; 830. a third terminal; 840. a fourth terminal; 850. a fifth terminal; 860. and a sixth terminal.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, fig. 2 and fig. 3, a network transformer 10 according to an embodiment of the present invention includes: a circuit board group 100, a first wire 400, a second wire 500, a third wire 600, a fourth wire 700, a first magnetic core 200 and a second magnetic core 300; the circuit board group 100 includes: the magnetic core comprises a first circuit board 110, a second circuit board 120, a third circuit board 130 and a fourth circuit board 140, wherein the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140 are respectively provided with a first through hole 310 and a second through hole 320, the first magnetic core 200 is arranged in each first through hole 310 in a penetrating manner, and the second magnetic core 300 is arranged in each second through hole 320 in a penetrating manner; the first conductive line 400 is formed on the first circuit board 110 by printing, and the first conductive line 400 is sequentially wound around the outer sides of the first through hole 310 and the second through hole 320; the second conductive line 500 is formed on the second circuit board 120 by printing, and the second conductive line 500 sequentially winds around the outer sides of the first through hole 310 and the second through hole 320; the third conductive line 600 is formed on the third circuit board 130 by printing, and the third conductive line 600 is wound around the outer side of the second through hole 320; the fourth conductive line 700 is formed on the fourth circuit board 140 by printing, and the fourth conductive line 700 is wound around the outer side of the second through hole 320; both ends of the first wire 400, the second wire 500, the third wire 600, and the fourth wire 700 are used to be connected to terminals, respectively.

In the present embodiment, the first through hole 310 and the second through hole 320 are formed in the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140, respectively, and the first through holes 310 are aligned, and the second through holes 320 are aligned, so that the first magnetic core 200 and the second magnetic core 300 can be mounted on the circuit board assembly 100, and the first conductive wire 400 and the second conductive wire 500 can be printed to be disposed around the first through hole 310 and the second through hole 320, so that the first conductive wire 400 and the second conductive wire 500 can be wound around the first magnetic core 200 and the second magnetic core 300, and the third conductive wire 600 and the fourth conductive wire 700 can be printed to be disposed around the second through hole 320, so that the first conductive wire 400 and the second conductive wire 500 are wound around the first magnetic core 200, respectively, to form a choke portion of the network transformer 10, the first conductive wire 400, the second conductive wire 320, and the second conductive wire 500, The second wire 500, the third wire 600 and the fourth wire 700 are wound on the second magnetic core 300 to form a transformer part of the network transformer, the first magnetic core 200 and the second magnetic core 300 can form a closed annular magnetic path, and after two ends of the first wire 400, the second wire 500, the third wire 600 and the fourth wire 700 are respectively connected with terminals, the first wire is electrified to generate an inductor.

In this embodiment, the first wire 400, the second wire 500, the third wire 600 and the fourth wire 700 are printed on the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140 respectively, so that the occupied space is small, the overall height of the network transformer 10 is greatly reduced, the network transformer can be directly connected with each terminal to form reliable electric connection, the assembly difficulty is reduced, and the production efficiency is improved.

In one embodiment, the network transformer 10 further comprises: a first terminal 810, a second terminal 820, a third terminal 830, a fourth terminal 840, a fifth terminal 850, and a sixth terminal 860, wherein a first end of the first conductive wire 400 is connected to the first terminal 810, a second end of the first conductive wire 400 is connected to the second terminal 820, a first end of the second conductive wire 500 is connected to the third terminal 830, a second end of the second conductive wire 500 is connected to the second terminal 820, a first end of the third conductive wire 600 is connected to the fourth terminal 840, a second end of the third conductive wire 600 is connected to the fifth terminal 850, a first end of the fourth conductive wire 700 is connected to the sixth terminal 860, and a second end of the fourth conductive wire 700 is connected to the fifth terminal 850. Specifically, the first terminal 810, the second terminal 820, the third terminal 830, the fourth terminal 840, the fifth terminal 850 and the sixth terminal 860 are all disposed on the circuit board assembly 100, and the second end of the first wire 400 and the second end of the second wire 500 are all connected with the second terminal 820, so that the second end of the first wire 400 and the second end of the second wire 500 are connected; the second end of the third wire 600 and the second end of the fourth wire 700 are both connected to the fifth terminal 850, so that the second end of the third wire 600 and the second end of the fourth wire 700 are connected to communicate with an external circuit through the first terminal, the second terminal 820, the third terminal 830, the fourth terminal 840, the fifth terminal 850, and the sixth terminal 860. It should be understood that the first terminal 810, the second terminal 820, the third terminal 830, the fourth terminal 840, the fifth terminal 850 and the sixth terminal 860 are pins, and are used for electrically connecting an internal circuit of the network transformer 10 with an external circuit.

In one embodiment, the number of the first through holes 310 may be one, one end of the first magnetic core 200 is inserted into the first through hole 310, and the other end of the first magnetic core 200 is located outside the circuit board group 100, that is, the first magnetic core 200 is partially located outside the circuit board group 100; the number of the second through holes 320 may be one, one end of the second magnetic core 300 is inserted into the second through hole 320, and the other end of the second magnetic core 300 is located outside the circuit board group 100, that is, the second magnetic core 300 is partially located outside the circuit board group 100. In another embodiment, the number of the first through holes 310 and the second through holes 320 may be two, two ends of the first magnetic core 200 respectively penetrate through the two first through holes 310, and two ends of the second magnetic core 300 respectively penetrate through the two second through holes 320.

In order to further reduce the area of the circuit board group 100, as shown in fig. 4, 5, 6 and 7, in one embodiment, the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140 respectively include two sub circuit boards 115 arranged in a stacked manner, the first conductive line 400 is printed and formed on the two sub circuit boards 115 of the first circuit board 110, the second conductive line 500 is printed and formed on the two sub circuit boards 115 of the second circuit board 120, the third conductive line 600 is printed and formed on the two sub circuit boards 115 of the third circuit board 130, and the fourth conductive line 700 is printed and formed on the two sub circuit boards 115 of the fourth circuit board 140. Specifically, a part of the first conducting wires 400 on one sub-circuit board 115 of the first circuit board 110 is connected with a part of the first conducting wires 400 on the other sub-circuit board 115 of the first circuit board 110 through the via holes 330 between the two sub-circuit boards 115; a part of the second conducting wires 500 on one sub-circuit board 115 of the second circuit board 120 is connected with a part of the second conducting wires 500 on the other sub-circuit board 115 of the second circuit board 120 through a via hole 330 between the two sub-circuit boards 115; a part of the third conducting wires 600 on one sub-circuit board 115 of the third circuit board 130 is connected with a part of the third conducting wires 600 on the other sub-circuit board 115 of the third circuit board 130 through the via holes 330 between the two sub-circuit boards 115; a part of the fourth conductive lines 700 on one sub-circuit board 115 of the fourth circuit board 140 is connected with a part of the fourth conductive lines 700 on another sub-circuit board 115 of the fourth circuit board 140 through the vias 330 between the two sub-circuit boards 115.

In this embodiment, as shown in fig. 4, the first lead 400 is formed by winding a first sub-coil 410a and a first sub-coil 410b on one of the sub-circuit boards 115, the first lead 400 is formed by winding a first sub-coil 410c and a first sub-coil 410d on the other sub-circuit board 115, the first sub-coil 410a and the first sub-coil 410c are formed by winding on the outer side of the first through hole 310, and the first sub-coil 410b and the first sub-coil 410d are formed by winding on the outer side of the second through hole 320. Specifically, after the first end of the first sub-coil 410a on the first sub-circuit board 115 is connected to the first terminal 810, the second end of the first sub-coil 410a is wound around the first through hole 310 for a plurality of turns, the second end of the first sub-coil 410a is connected to the first end of the first sub-coil 410c on the second sub-circuit board 115 through the first via hole 330, after the second end of the first sub-coil 410c is wound around the first through hole 310 for a plurality of turns, the second end of the first sub-coil 410c is connected to the first end of the first sub-coil 410b on the first sub-circuit board 115 through the second via hole 330, after the second end of the first sub-coil 410b is wound around the first through hole 310 for a plurality of turns, the second end of the first sub-coil 410b is connected to the first end of the first sub-coil 410d on the second sub-circuit board 115 through the third via hole 330, and after the second end of the first sub-coil 410d is wound around the second via hole 330 for a plurality of turns, a second end of the first sub-coil 410d is connected to the second terminal 820.

In this embodiment, as shown in fig. 5, a second sub-coil 510a and a second sub-coil 510b are respectively formed on one of the sub-circuit boards 115 by winding the second conducting wire 500, a second sub-coil 510c and a second sub-coil 510d are respectively formed on the other sub-circuit board 115 by winding the second conducting wire 500, the second sub-coil 510a and the second sub-coil 510c are arranged outside the first through hole 310, the second sub-coil 510b and the second sub-coil 510d are arranged outside the second through hole 320, a first end of the second sub-coil 510c is connected to the third terminal 830, a second end of the second sub-coil 510c is connected to a first end of the second sub-coil 510a through the first through hole 330, a second end of the second sub-coil 510a is connected to a first end of the second sub-coil 510b, a second end of the second sub-coil 510b is connected to a first end of the second sub-coil 510d through the second through hole 330, a second end of the second sub-coil 510d is connected to the second terminal 820.

In this embodiment, as shown in fig. 6, a third sub-coil 610a is formed by winding the third conducting wire 600 on one of the sub-circuit boards 115, a third sub-coil 610b is formed by winding the third conducting wire 600 on the other sub-circuit board 115, the third sub-coil 610a and the third sub-coil 610b are wound outside the second through hole 320, a first end of the third sub-coil 610a is connected to the fourth terminal 840, a second end of the third sub-coil 610a is connected to a first end of the third sub-coil 610b through a via 330, and a second end of the third sub-coil 610b is connected to the fifth terminal 850.

In this embodiment, as shown in fig. 7, the fourth conductive wire 700 is wound around one of the sub circuit boards 115 to form a fourth sub coil 710a, the fourth conductive wire 700 is wound around the other sub circuit board 115 to form a fourth sub coil 710b, the fourth sub coil 710a and the fourth sub coil 710b are wound around the outside of the second through hole 320, a first end of the fourth sub coil 710a is connected to the sixth terminal 860, a second end of the fourth sub coil 710a is connected to a first end of the fourth sub coil 710b through a via 330, and a second end of the fourth sub coil 710b is connected to the fifth terminal 850, so that the area of the sub circuit board 115 required for a certain number of coil turns is small by arranging two laminated sub circuit boards 115, the area of each circuit board of the network transformer 10 can be reduced, and the first circuit board 110, the second circuit board 110, the third circuit board, and the fourth circuit board are stacked on the same substrate 115, The second circuit board 120, the third circuit board 130 and the fourth circuit board 140 have more inductance coils, so that the quality of the network transformer 10 is ensured.

In order to make the network transformer 10 have different specifications, in one embodiment, as shown in fig. 8 and 10, at least two first circuit boards 110, two second circuit boards 120, two third circuit boards 130, and two fourth circuit boards 140 are provided, and the number of the first circuit boards 110, the number of the second circuit boards 120, the number of the third circuit boards 130, and the number of the fourth circuit boards 140 are the same. Specifically, the numbers of the first conducting wires 400, the second conducting wires 500, the third conducting wires 600 and the fourth conducting wires 700 are respectively corresponding to the numbers of the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140, and are respectively the same as the numbers of the first terminals 810, the second terminals 820, the third terminals 830, the fourth terminals 840, the fifth terminals 850 and the sixth terminals 860, at this time, the numbers of the first magnetic cores 200 and the second magnetic cores 300 are not changed, that is, the number of the circuit boards in the circuit board group 100 is multiplied to realize that the network transformer 10 has multiple coil windings, so that the network transformer 10 has a larger specification. For example, the number of the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140 is two, the number of the first lead 400, the second lead 500, the third lead 600 and the fourth lead 700 is two, and the circuit structure diagram of the network transformer 10 is as shown in fig. 9, so that the network transformer 10 has double coil windings and has a larger size. In one embodiment, the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140 respectively include two sub circuit boards 115 arranged in a stacked manner, so that the area of each circuit board can be reduced. It should be understood that the number of circuit boards in the circuit board assembly 100 can be increased by a factor that is adjustable according to the requirement of different levels between different network devices for accommodating different data transmission and isolating network cable connections, and is not limited in this respect.

In order to make the network transformer 10 have different specifications, in one embodiment, at least two first wires 400, two second wires 500, two third wires 600, and two fourth wires 700 are provided, and the number of the first wires 400, the number of the second wires 500, the number of the third wires 600, and the number of the fourth wires 700 are the same. Specifically, at least two windings formed by the first conducting wire 400 are accommodated on the first circuit board 110, at least two windings formed by the second conducting wire 500 are accommodated on the second circuit board 120, at least two windings formed by the third conducting wire 600 are accommodated on the third circuit board 130, and at least two windings formed by the fourth conducting wire 700 are accommodated on the fourth circuit board 140, at this time, the number of the first magnetic cores 200 and the number of the second magnetic cores 300 are correspondingly increased, that is, the area of the first circuit board 110, the area of the second circuit board 120, the area of the third circuit board 130, and the area of the fourth circuit board 140 are increased so that the first circuit board 110, the second circuit board 120, the third circuit board 130, and the fourth circuit board 140 can accommodate multiple coil windings, so that the network transformer 10 has multiple coil windings, and thus the network transformer 10 has a larger specification.

In this embodiment, the number of the first conductive wires 400, the number of the second conductive wires 500, the number of the third conductive wires 600, and the number of the fourth conductive wires 700 may be two, so that the number of the first through holes 310 is at least two, the number of the second through holes 320 is at least two, the number of the first magnetic cores 200 and the second magnetic cores 300 is two, the number of the first terminals 810, the second terminals 820, the third terminals 830, the fourth terminals 840, the fifth terminals 850, and the sixth terminals 860 is increased to two times, each of the first conductive wires 400 is sequentially wound around the outer sides of one of the first through holes 310 and one of the second through holes 320, each of the first magnetic cores 200 is respectively inserted through one of the first through holes 310, each of the second magnetic cores 300 is respectively inserted through one of the second through holes 320, and the second conductive wires 500, each of the second conductive wires 300, The third wire 600 and the fourth wire 700 are arranged in the same manner, that is, two sets of windings formed by the first wire 400, two sets of windings formed by the second wire 500, two sets of windings formed by the third wire 600 and two sets of windings formed by the fourth wire 700 are arranged on the same circuit board, so that the network transformer 10 has different specifications and can meet the requirements of different levels between different network devices connected with different transmission data and isolation network cables. For another example, when the number of the first conductive lines 400, the number of the second conductive lines 500, the number of the third conductive lines 600, and the number of the fourth conductive lines 700 are four, the arrangement may be performed in the above manner, such that four sets of windings formed by the first conductive lines 400 are provided on the same circuit board, four sets of windings formed by the second conductive lines 500 are provided on the same circuit board, four sets of windings formed by the third conductive lines 600 are provided on the same circuit board, and four sets of windings formed by the fourth conductive lines 700 are provided on the same circuit board.

In order to make the network transformer 10 have different specifications, in one embodiment, as shown in fig. 11, the network transformer 10 has multiple coil windings by multiplying the number of the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140 and the number of the corresponding first conducting wire 400, second conducting wire 500, third conducting wire 600 and fourth conducting wire 700 on each of the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140, so that the network transformer 10 has a larger specification. Specifically, the number of the first circuit board 110, the second circuit board 120, the third circuit board 130, and the fourth circuit board 140 may be two, the number of the first lead 400, the second lead 500, the third lead 600, and the fourth lead 700 may be four, and the circuit configuration diagram of the network transformer 10 is shown in fig. 12, so that the network transformer 10 has several times of coil windings and has a larger specification. In one embodiment, the first circuit board 110, the second circuit board 120, the third circuit board 130 and the fourth circuit board 140 respectively include two sub circuit boards 115 arranged in a stacked manner, so that the area of each circuit board can be reduced.

In one embodiment, the cross-sectional shapes of the first circuit board 110, the second circuit board 120, the third circuit board 130, and the fourth circuit board 140 are any one of a circle, a triangle, a rectangle, a hexagon, and an ellipse, respectively. Specifically, the thicknesses of the first circuit board 110, the second circuit board 120, the third circuit board 130, and the fourth circuit board 140 are the same, the cross-sectional shapes of the first circuit board 110, the second circuit board 120, the third circuit board 130, and the fourth circuit board 140 may be set according to the winding shapes of the first wire 400, the second wire 500, the third wire 600, and the fourth wire 700, for example, the winding shape of the first wire 400 on the first through hole 310 or the second through hole 320 is a circle, the cross-sectional shape of the first circuit board 110 may be a rectangle, or, for example, the winding shape of the first wire 400 on the first through hole 310 or the second through hole 320 is a square, and the cross-sectional shape of the first circuit board 110 may be an ellipse.

In order to avoid the short circuit caused by the foreign object contacting the windings on the circuit board assembly 100, as shown in fig. 13 and 14, in one embodiment, the network transformer 10 further includes a housing, the housing is connected to the circuit board assembly 100, and the housing covers the first magnetic core 200 and the second magnetic core 300. Specifically, the housing includes a first package board 150 and a second package board 160, the first package board 150 is connected to a first surface of the circuit board assembly 100, the first package board 150 is disposed on the outer sides of the first magnetic core 200 and the second magnetic core 300, the second package board 160 is connected to a second surface of the circuit board, the second package board 160 is disposed on the outer sides of the first magnetic core 200 and the second magnetic core 300, a first receiving cavity is opened on a surface of the first package board 150 facing the first surface of the circuit board assembly 100, a second receiving cavity is opened on a surface of the second package board 160 facing the second surface of the circuit board assembly 100, a side wall of the first receiving cavity is connected to an edge position of the first surface of the circuit board assembly 100, a side wall of the second receiving cavity is connected to an edge position of the second surface of the circuit board assembly 100, at this time, the height of the first package board 150 protruding from the first surface of the circuit board assembly 100 is greater than the height of the first magnetic core 200 and the second magnetic core 300 protruding from the first surface of the circuit board assembly 100, and the height of the second package board 160 protruding from the second surface of the circuit board assembly 100 is greater than the height of the first magnetic core 200 and the second magnetic core 300 protruding from the second surface of the circuit board assembly 100, so that the first conductive wire 400, the second conductive wire 500, the third conductive wire 600, and the fourth conductive wire 700 on the circuit board assembly 100 are enclosed in the first package board 150 and the second package board 160, thereby preventing the external substance from contacting the winding to cause short circuit, and ensuring the quality of the product.

Furthermore, the shell is made of plastics, the plastics are high molecular compounds formed by polymerization of monomers through addition polymerization or condensation polymerization, the shell is light and stable in chemical property and has the characteristics of good insulativity and low heat conductivity, and the shell made of the plastics is light and stable in chemical property and has the characteristics of good insulativity and low heat conductivity, so that a good sealing effect can be achieved.

In one embodiment, two first accommodating holes are formed in the middle of the first packaging plate, the first magnetic core and the second magnetic core are respectively disposed in one of the first accommodating holes, and the height of the first packaging plate protruding from the first surface of the circuit board group is equal to the height of the first magnetic core protruding from the first surface of the circuit board group. Specifically, a first containing hole is formed in the middle of the first packaging plate, the first containing hole is communicated with the first containing cavity, the first magnetic core is arranged in one of the first containing holes, the second magnetic core is arranged in the other of the first containing holes, and the side wall of the first magnetic core and the side wall of the second magnetic core are respectively abutted to the side wall of the first containing cavity, so that the height of the first packaging plate protruding from the first surface of the circuit board group is equal to the height of the first magnetic core protruding from the first surface of the circuit board group and the height of the second magnetic core protruding from the first surface of the circuit board group, and the whole height of the network transformer can be maintained while the network transformer is packaged.

In one embodiment, two second accommodating holes are formed in the middle of the second packaging plate, the first magnetic core and the second magnetic core are respectively disposed in one of the second accommodating holes, and the height of the second packaging plate protruding from the second surface of the circuit board group is equal to the height of the first magnetic core and the second magnetic core protruding from the second surface of the circuit board group. Specifically, a second accommodating hole is formed in the middle of the second packaging board, the second accommodating hole is communicated with the second accommodating cavity, the first magnetic core is arranged in one second accommodating hole, the second magnetic core is arranged in the other second accommodating hole, and the side wall of the first magnetic core and the side wall of the second magnetic core are respectively abutted to the side wall of the second accommodating cavity, so that the height of the second packaging board protruding from the second surface of the circuit board group is equal to the height of the first magnetic core and the height of the second magnetic core protruding from the second surface of the circuit board group, and the overall height of the network transformer can be maintained unchanged while the network transformer is packaged.

In one embodiment, a plurality of through holes are formed in the side wall of the second package board, that is, each through hole is uniformly formed in the side walls of the second accommodating cavity, so that when the second package board is assembled on the second surface of the circuit board, the first terminal, the second terminal, the third terminal, the fourth terminal, the fifth terminal and the sixth terminal can be arranged in the through holes and located outside the second package board, and connection between the first terminal, the second terminal, the third terminal, the fourth terminal, the fifth terminal and the sixth terminal and an external electronic component is facilitated.

In one embodiment, the cross-sectional shapes of the circuit board, the first package board and the second package board are rectangles, the width of the circuit board is equal to the width of the first package board and the width of the second package board, the length of the circuit board is equal to the length of the first package board and the length of the second package board, so that the peripheral side walls of the first package board are respectively aligned with the peripheral side walls of the circuit boards on the same plane, the peripheral side walls of the second package board are respectively aligned with the peripheral side walls of the circuit boards and are located on the same plane, and therefore the peripheral side walls of the network transformer are flush and have good integrity.

In one embodiment, the circuit board assembly has a first through hole, a second through hole and a third through hole, the third through hole is located between the first through hole and the second through hole, two ends of the first magnetic core respectively penetrate through the first through hole and the third through hole, two ends of the second magnetic core respectively penetrate through the second through hole and the third through hole, and one end of the first magnetic core is connected to one end of the second magnetic core. Specifically, the first through hole, the second through hole, and the third through hole all penetrate through the first circuit board, the second circuit board, the third circuit board, and the fourth circuit board, and the first magnetic core includes: a first sub-magnetic core block and a second sub-magnetic core block, wherein the first sub-magnetic core block is U-shaped or U-shaped, the second sub-magnetic core block may be I-shaped, and the second magnetic core comprises: a third sub-core block and a fourth sub-core block, wherein the third sub-core block is U-shaped or U-shaped, the fourth sub-core block is I-shaped, the first sub-core block and the third sub-core block are connected to form an E-shaped core block, the second sub-core block and the fourth sub-core block are connected to form an I-shaped core block, the E-shaped core block formed by the first sub-core block and the third sub-core block passes through the first through hole, the second through hole and the third through hole and is connected to the I-shaped core block formed by the second sub-core block and the fourth sub-core block, the first core and the second core are EI-shaped, that is, one end of the first sub-core block connected to the third sub-core block passes through the third through hole, so that a first conductive wire and a second conductive wire can be disposed around the first core and the second core, a third wire and a fourth wire are disposed about the second magnetic core. In another embodiment, the first and third sub-magnetic core blocks are integrally disposed, and the second and fourth sub-magnetic core blocks are integrally disposed.

In one embodiment, the first packaging board includes a first mounting sub-board and a second mounting sub-board, the first mounting sub-board is disposed on one side of the first magnetic core, the second mounting sub-board is disposed on one side of the second magnetic core, two sides of one end of the first mounting sub-board close to the first magnetic core extend in a direction of the second mounting sub-board to form a first connection portion and a second connection portion, two sides of one end of the second mounting sub-board close to the second magnetic core extend in a direction of the first mounting sub-board to form a third connection portion and a fourth connection portion, the first connection portion is connected to the third connection portion, the second connection portion is connected to the fourth connection portion, a first receiving groove is formed between the first connection portion and the second connection portion, and a second receiving groove is formed between the third connection portion and the fourth connection portion, the first accommodating groove and the second accommodating groove are communicated to form a third accommodating hole, and the first magnetic core and the second magnetic core are arranged in the third accommodating hole.

In this embodiment, the first installation daughter board and the second installation daughter board have the same shape and size, the first end of the first installation daughter board and the first end of the second installation daughter board are disposed at two opposite sides of the first surface of the circuit board assembly, the first magnetic core and the second magnetic core are disposed between the first installation daughter board and the second installation daughter board, the first connection portion and the third connection portion may be connected by a glue layer, the second connection portion and the fourth connection portion may be connected by a glue layer, so that the second end of the first installation daughter board is connected to the second end of the second installation daughter board, the first receiving slot at the second end of the first installation daughter board is communicated with the second receiving slot at the second end of the second installation daughter board to form the third receiving hole, and the shape and size of the third receiving hole are equal to those of the first magnetic core and the second magnetic core protrudes from the circuit board assembly The first surface of the first housing member is adapted in shape and size, such that when the first and second daughter boards are assembled to the first surface of the circuit board assembly, the first and second magnetic cores are located in the third receiving hole.

In one embodiment, the second packaging board includes a third mounting sub-board and a fourth mounting sub-board, the third mounting sub-board is disposed at one side of the first magnetic core, the fourth mounting sub-board is disposed at one side of the second magnetic core, two sides of one end of the third mounting sub-board close to the first magnetic core extend in a direction of the fourth mounting sub-board to form a first overlapping portion and a second overlapping portion, two sides of one end of the fourth mounting sub-board close to the second magnetic core extend in a direction of the third mounting sub-board to form a third overlapping portion and a fourth overlapping portion, the first overlapping portion is connected with the third overlapping portion, the second overlapping portion is connected with the fourth overlapping portion, a third accommodating groove is formed between the first overlapping portion and the second overlapping portion, and a fourth accommodating groove is formed between the third overlapping portion and the fourth overlapping portion, the third accommodating groove and the fourth accommodating groove are communicated to form a fourth accommodating hole, and the first magnetic core and the second magnetic core are arranged in the fourth accommodating hole.

In this embodiment, the third sub-board and the fourth sub-board are identical in shape and size, the first end of the third sub-board and the first end of the fourth sub-board are oppositely disposed on two sides of the second surface of the circuit board assembly, the first magnetic core and the second magnetic core are located between the third sub-board and the fourth sub-board, the first overlapping portion and the third overlapping portion can be connected by a glue layer, the second overlapping portion and the fourth overlapping portion can be connected by a glue layer, so that the second end of the third sub-board is connected with the second end of the fourth sub-board, the third accommodating slot on the second end of the third sub-board is communicated with the fourth accommodating slot on the second end of the fourth sub-board to form the fourth accommodating hole, and the shape and size of the fourth accommodating hole are identical to those of the first and second magnetic cores protruding from the circuit board assembly The second surface of the second housing member is adapted to the second surface of the second housing member, such that when the third and fourth daughter boards are assembled to the second surface of the circuit board assembly, the first and second magnetic cores are disposed in the second receiving holes.

In order to make the network transformer have better integrity, in an embodiment, the thickness of the first packaging plate is equal to that of the second packaging plate, that is, the first packaging plate and the second packaging plate are symmetrically arranged on two sides of the circuit board, and the weight of the first packaging plate and the weight of the second packaging plate on two sides of the circuit board are the same, so that the gravity center of the network transformer cannot be changed.

In one embodiment, the first package board is connected with the circuit board through a first adhesive layer. Specifically, the material of first viscose layer can be epoxy resin sealed glue or polyurethane sealed glue, can be steadily with the first end of first packing plate with the circuit board is connected. Further, the second packing plate with the circuit board passes through the second viscose layer and is connected, the material on second viscose layer can be epoxy resin sealed glue or polyurethane sealed glue, can steadily with the first end of second packing plate with the circuit board is connected.

In one embodiment, an electronic device is provided, wherein the electronic device comprises the network transformer in any one of the above embodiments, and the electronic device is capable of transmitting data and isolating different levels between different network devices connected by a network cable. It is to be understood that the electronic device also comprises other means to implement the functions provided by the electronic device.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above embodiments only express a few embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A network transformer, comprising: the circuit board comprises a circuit board group, a first conducting wire, a second conducting wire, a third conducting wire, a fourth conducting wire, a first magnetic core and a second magnetic core;

2. The network transformer of claim 1, further comprising: the first end of the first wire is connected with the first terminal, the second end of the first wire is connected with the second terminal, the first end of the second wire is connected with the third terminal, the second end of the second wire is connected with the second terminal, the first end of the third wire is connected with the fourth terminal, the second end of the third wire is connected with the fifth terminal, the first end of the fourth wire is connected with the sixth terminal, and the second end of the fourth wire is connected with the fifth terminal.

3. The network transformer of claim 1, wherein the number of the first circuit board, the second circuit board, the third circuit board and the fourth circuit board is at least two, and the number of the first circuit board, the second circuit board, the third circuit board and the fourth circuit board is the same.

4. The network transformer according to claim 1, wherein the number of the first wire, the second wire, the third wire and the fourth wire is at least two, and the number of the first wire, the second wire, the third wire and the fourth wire is the same.

5. The network transformer according to claim 1, wherein the first circuit board, the second circuit board, the third circuit board and the fourth circuit board have a cross-sectional shape of any one of a circle, a triangle, a rectangle, a hexagon and an ellipse.

6. The network transformer of claim 1, wherein the first circuit board, the second circuit board, the third circuit board, and the fourth circuit board are the same thickness.

7. The network transformer of claim 1, further comprising a housing, wherein the housing is connected to the circuit board assembly, and the housing covers the first and second cores.

8. The network transformer of claim 7, wherein the housing is made of plastic.

9. An electronic device, comprising: a network transformer as claimed in any one of claims 1 to 8.