CN111199824A

CN111199824A - Magnetic member

Info

Publication number: CN111199824A
Application number: CN201911094335.3A
Authority: CN
Inventors: 郑景元
Original assignee: Mag Layers Scientific Technics Co Ltd
Current assignee: Mag Layers Scientific Technics Co Ltd
Priority date: 2018-11-19
Filing date: 2019-11-11
Publication date: 2020-05-26
Also published as: TWM575180U

Abstract

A magnetic component is composed of an iron core, a first side plate, a second side plate and a cover plate, wherein the first side plate and the second side plate are provided with at least one electrode, the electrode extends from the bottom to the side surface of each side plate, when the magnetic component is attached to a circuit board, a metal welding flux can climb from the bottom of the side plates to the side surface, and therefore the welding reliability of the magnetic component is improved.

Description

Magnetic member

Technical Field

The invention relates to a magnetic component, in particular to a magnetic component which is characterized in that at least one electrode is arranged on two side plates of the magnetic component, each electrode extends from the bottom to the side surface of the side plate so as to increase the bonding area between the magnetic component and a circuit board, and the two side plates are respectively electrically connected between a group of adjacent electrodes so as to reduce the condition of wire jumping.

Background

In communication and transmission electronic devices, the interior of the electronic device is composed of a plurality of active elements and passive elements, such as magnetic members, resistors, etc., and the magnetic members (such as transformers, inductors, etc.) have the characteristic of generating magnetic fields when current is introduced, and the magnetic members are also one of the important elements in the electronic devices; please refer to the "transformer" of taiwan patent No. TW201440091, wherein TW201440091 discloses a transformer, which mainly comprises a plurality of magnetic conductive elements, a plurality of electrodes, a primary winding set and a secondary winding set, wherein the magnetic conductive elements comprise a first protrusion and a second protrusion, and each electrode is respectively disposed on the first protrusion and the second protrusion, wherein the first protrusion and the second protrusion electrically connect a group of electrodes in advance, so that the problem of wire jumping of the transformer can be eliminated;

there are other reference cases, as follows:

(1) taiwan patent publication No. TW201440096, "transformer";

(2) taiwan patent publication No. TWM428476 "pulse transformer";

(3) taiwan patent publication No. TWM531040 "a transformer structure that can be conveniently manufactured";

(4) chinese utility model patent publication No. CN206864287U "transformer structure capable of improving yield".

As disclosed in the TW201440091 patent, when a user welds a transformer to a circuit board, the welding area between the transformer and the circuit board is only the electrodes on the first protruding portion and the second protruding portion, and the welding method can resist a large vertical pulling force, and if the transformer is subjected to a lateral external force, the transformer may be dislocated, which may affect the normal use of the transformer, thereby increasing the welding adhesion of the magnetic member and reducing the number of jumpers.

Disclosure of Invention

In view of the above problems, the present inventors have conducted a modification of the bonded structure of the magnetic member based on the experience of the related industries for many years; therefore, the present invention is directed to provide a magnetic member that can increase the soldering area between the magnetic member and the circuit board and avoid wire jumping on the circuit board.

The magnetic member of the present invention comprises an iron core, a first side plate, a second side plate and a cover plate, wherein the first side plate and the second side plate are provided with at least one electrode, the electrode extends from the bottom to the side surface of each side plate, when the magnetic member is attached to a circuit board, a metal solder can climb from the bottom to the side surface of each side plate, thereby increasing the welding reliability of the magnetic member, and a group of adjacent electrodes of the first side plate and a group of adjacent electrodes of the second side plate are respectively electrically connected, so that after the magnetic member is attached to the circuit board, the wire jumping situation of the magnetic member can be reduced.

Furthermore, the coil winding is composed of a first layer winding and a second layer winding.

Further, the first layer of windings and the second layer of windings form a phase difference of 180 degrees.

Furthermore, the magnetic component is attached and welded on the circuit board by a metal solder by a surface-mount technology.

Further, the metal solder extends from the bottom of each side plate and climbs to the side surface of each side plate.

Furthermore, a group of two adjacent electrodes on the side surface of the first side plate or the side surface of the second side plate are electrically connected respectively.

Furthermore, the two adjacent electrodes are electrically connected with the whole contact area.

Furthermore, a gap is formed between the cover plate and the iron core.

Further, the gap is not less than 0.3mm and not more than 0.5 mm.

Drawings

FIG. 1 is an assembly view of the present invention.

Fig. 2 is a bottom view of the present invention.

Fig. 3 is a left side view of the present invention.

Fig. 4 is a right side view of the present invention.

Fig. 5 is a winding diagram (one) of the coil winding of the present invention.

Fig. 6 is a schematic diagram (two) of the coil winding of the present invention.

FIG. 7 is a schematic diagram of the present invention.

Fig. 8 is a schematic diagram (ii) illustrating an embodiment of the present invention.

FIG. 9 shows an embodiment (I) of the present invention.

Description of the reference numerals

10 magnetic component

101 iron core 102 first side board

1021 bottom

1022 side surface

103 second side plate 104 cover plate

1031 bottom

1032 side

105 coil winding

1051 first layer winding

1052 second layer winding

20 circuit board

201 electric contact

E11 first electrode E12 second electrode

E13 third electrode E14 fourth electrode

E21 fifth electrode E22 sixth electrode

E23 seventh electrode E24 eighth electrode

And M metal solder.

Detailed Description

For a clear understanding of the objects, technical features and effects of the present invention, reference will now be made to the following description taken in conjunction with the accompanying drawings.

Referring to fig. 1, which is an assembly diagram of the present invention, the magnetic member 10 of the present invention mainly includes an iron core 101, a first side plate 102 assembled at one end of the iron core 101, a second side plate 103 assembled at the other end of the iron core 101, and a cover plate 104 having two ends respectively assembled at the first side plate 102 and the second side plate 103; referring to the drawing again, the iron core 101 is provided with at least one group of coil windings for winding, and the material of the iron core 101 is a high-permeability material; after the iron core 101, the first side plate 102 and the second side plate 103 are assembled, the first side plate 102 and the second side plate 103 protrude out of the iron core 101, when the cover plate 104, the first side plate 102 and the second side plate 103 are assembled, a gap is formed between the cover plate 104 and the iron core 101, so that the coil winding can be wound on the iron core 101, and the cover plate 104 and the coil winding can keep a proper distance, wherein the gap is more than or equal to 0.3mm and less than or equal to 0.5 mm.

Referring to fig. 2, which is a bottom view of the present invention, as shown in the drawing, the first side plate 102 and the second side plate 103 are respectively provided with at least one electrode, as shown in the drawing, a bottom 1021 of the first side plate 102 is provided with a first electrode E11, a second electrode E12, a third electrode E13 and a fourth electrode E14, as shown in the drawing, a bottom 1031 of the second side plate 103 is provided with a fifth electrode E21, a sixth electrode E22, a seventh electrode E23 and an eighth electrode E24, as shown in fig. 3-4, as shown in the left and right views of the present invention, as shown in fig. 3, the first electrode E11, the second electrode E12, the third electrode E13 and the fourth electrode E14 extend to a side of the first side plate 102, and the third electrode E13 on the side surface extends to the fourth electrode E14, so that the third electrode E13 and the fourth electrode E8536 are electrically connected to each other as shown in fig. 3, the fifth electrode E21, the sixth electrode E22, the seventh electrode E23 and the eighth electrode E24 extend to a side 1032 of the second side plate 103, and the seventh electrode E23 on the side 1032 extends to the eighth electrode E24, so that the seventh electrode E23 and the eighth electrode E24 are electrically connected to each other, and therefore, the routing of a circuit board can be reduced by forming a circuit connection (short circuit) at the side of the electrodes (E13, E14) or the electrodes (E23, E24).

Referring to fig. 5 to 6, there are shown coil winding diagrams (a) to (b) of the present invention, in which a coil winding 105 is wound around an iron core 101, the coil winding 105 is composed of a first layer winding 1051 and a second layer winding 1052, and two layers of windings are wound at the same time, and the first layer winding 1051 and the second layer winding 1052 form a phase difference of 180 degrees, so that the magnetic member 10 of the present invention can obtain better electromagnetic characteristics, for example, as shown in the drawings, the first layer winding 1051 electrically connects the first electrode E11 to the seventh electrode E23, the third electrode E13 to the fifth electrode E21, the second layer winding 1052 electrically connects the second electrode E12 to the eighth electrode E24, the fourth electrode E14 to the sixth electrode E22, so that the first layer winding 1051 and the second layer winding 1052 form a phase difference of 180 degrees, and the electromagnetic characteristics of the magnetic member 10 can be improved through the connection position, this embodiment is merely a preferred embodiment, and other connection methods can be implemented, and are not limited to this connection method, which is disclosed in the specification.

Referring to fig. 7, a schematic diagram (a) of an embodiment of the present invention is shown, and referring to fig. 3 to 5, as shown in fig. 8, when the magnetic member 10 of the present invention is implemented, it is attached and soldered to a circuit board 20 by Surface Mount Technology (SMT), as shown in fig. 8, a schematic diagram (b) of an embodiment of the present invention is shown, as shown in fig. 10, when the magnetic member 10 is attached and soldered to the circuit board 20, the magnetic member 10 respectively corresponds to a plurality of electrical contacts 201 of the circuit board 20 by electrodes (E11 to E24), and then each electrode (E11 to E24) is attached and soldered to each electrical contact 201 by a metal solder M (e.g., molten tin), as shown in fig. 5, each electrode (E11 to E24) extends to 1022 (two side faces, 1032), so that the metal solder M can attach and solder each electrode (E11 to E24) of two bottom portions (1021, 1031) to each electrical contact 201 during soldering, the metal solder M can extend from the bottom parts (1021, 1031) to the two side surfaces (1022, 1032) and climb to the electrodes (E11-E24) extending to the two side surfaces (1022, 1032), thereby increasing the contact area between the magnetic member 10 and the metal solder M and further improving the soldering reliability of the magnetic member 10 and the tensile strength of the solder joint.

Referring to fig. 9, it is shown that in the first embodiment of the present invention, referring to fig. 3 to fig. 4, as shown in the figure, the electrical connection area of the third electrode E13 and the fourth electrode E14 extending to the side surface 1022 may be all or part of, in this embodiment, the third electrode E13 and the fourth electrode E14 of the side surface 1022 and the entire areas of the two electrodes (E13 and E14) are electrically connected, so that when the third electrode E13 and the fourth electrode E14 are soldered, the metal solder can be more easily attached to the side surface 1022, and the seventh electrode E23 and the eighth electrode E24 of the other side surface 1032 (not shown in this figure) are the same as those described above, and thus, the description thereof is omitted.

In view of the above, the magnetic member of the present invention comprises an iron core, a first side plate, a second side plate and a cover plate, wherein the first side plate and the second side plate have at least one electrode, wherein the electrode extends from the bottom to the side surface of each side plate, when the magnetic member is attached to a circuit board, a metal solder can climb from the bottom to the side surface of the side plate, thereby increasing the welding reliability of the magnetic member, and a group of electrodes adjacent to each other on the first side plate and a group of electrodes adjacent to each other on the second side plate form an electrical connection, so that the jumper situation of the magnetic member can be reduced after the magnetic member is attached to the circuit board; accordingly, the present invention is implemented to provide a magnetic member capable of increasing the soldering area between the magnetic member and the circuit board and preventing the circuit board from jumping.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; all equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and scope of the present invention should be covered by the appended claims.

Claims

1. A magnetic member for being attached to a circuit board, comprising:

an iron core;

the first side plate is assembled at one side of the iron core, at least one electrode assembly is arranged on the first side plate, and each electrode extends from the bottom of the first side plate to the side surface;

the second side plate is assembled at the other side of the iron core, at least one electrode is assembled on the second side plate, and each electrode extends to the side face from the bottom of the second side plate;

a coil winding wound on the iron core, the coil winding being electrically connected to the electrodes of the first side plate and the second side plate respectively; and

and the two ends of the cover plate are respectively arranged on the first side plate and the second side plate.

2. The magnetic structure of claim 1, wherein the coil winding is comprised of a first layer of windings and a second layer of windings.

3. The magnetic component of claim 2, wherein the first layer of windings is 180 degrees out of phase with the second layer of windings.

4. The magnetic component of claim 1, wherein the magnetic component is attached to the circuit board by a surface mount technology using a metal solder.

5. The magnetic component of claim 4, wherein the metallic solder extends from the bottom of each side plate and climbs to the side of each side plate.

6. The magnetic component of claim 1, wherein a set of two adjacent electrodes on the side of the first side plate or the side of the second side plate are electrically connected.

7. The magnetic component of claim 6, wherein two electrodes in close proximity are electrically connected with full contact area.

8. The magnetic component of claim 1, wherein a gap is formed between the cover plate and the core.

9. The magnetic structure of claim 8, wherein the gap is 0.3mm or more and 0.5mm or less.