TWM578002U - Inductor - Google Patents

Abstract

An inductor is disclosed. The inductor includes a first magnetic core, a second magnetic core, and an electrical conductor provided therebetween, wherein the first magnetic core includes a first gap, an intermediate component, a peripheral component surrounding and connecting the intermediate component, and a space and two through holes formed between the intermediate component and the peripheral component. Two sides of a U-shaped body of the electrical conductor insert into the two through holes such that the electrical conductor is received in the space, and two ends of the two sides that extend from a bottom surface of the first magnetic core bend so as to be two connections. The second magnetic core covers a top surface of the first magnetic core with a bottom of the U-shaped body between the intermediate component and the second magnetic core. By the first gap, the inductance and the saturation current of the inductor can be controlled. The inductor according to the disclosure has magnetic lines of 3D magnetic flux.

Description

Inductive component

This case relates to an electronic component, in particular, to an inductive component.

An inductive component is a passive electronic component that can store electrical energy in the form of magnetic flux. It will generate an electromotive force due to a change in current, thereby resisting the change of current. This property is called inductance. Inductive components can have filtering and oscillating effects in the circuit, and also have electromagnetic wave interference, electromagnetic radiation shielding, and noise in the filtered current. Inductive components are used in a wide range of applications, including power supplies, monitors, switches, motherboards, scanners, telephones, modems, and more.

In general, the inductive component is either a single magnetic circuit design or a dual magnetic circuit design, and the magnetic paths are distributed in a plane in the same direction, thus causing the magnetic core as a magnetic path to easily reach magnetic saturation.

Therefore, how to provide an inductive component that overcomes the aforementioned problems is an active research and development direction in the industry.

In order to overcome the above problems and other problems, the present invention discloses an inductance element that can stably control the characteristics of the inductance element.

The inductive component of the present invention comprises: a first magnetic core, comprising a first gap, an intermediate member, a surrounding member surrounding and connecting the intermediate member, a space formed between the intermediate member and the surrounding member, and a through hole; The conductive element is disposed in the space of the first magnetic core and includes a U-shaped body and two connecting portions extending from the U-shaped body; and a second magnetic core covering the first magnetic core.

Further, the first gap is formed on one side of the first magnetic core to separate the side of the first magnetic core from the surrounding member; or the first gap is formed in the first magnetic core to The first core is divided into two parts. The first gap can be used as an energy storage for the inductive component to control characteristics such as inductance and saturation current.

In addition, the first magnetic core and the second magnetic core may further have a second gap, so that the inductance element has a second-stage inductance characteristic in addition to the first-stage inductance characteristic provided by the first gap.

Next, the U-shaped body of the conductive element has a bottom portion sandwiched between the intermediate member and the second magnetic core and two side portions that are inserted into the two through holes. In addition, the first magnetic core further includes two recesses formed on the bottom surface of the first magnetic core adjacent to the two through holes for the two connecting portions, and the two connecting portions can serve as pads for electrical connection.

In addition, the intermediate member and the surrounding member have a height difference to form the space between the intermediate member and the surrounding member, so that the conductive member accommodated in the space does not protrude from the top surface of the first magnetic core. . Moreover, the second magnetic core is a plate-shaped body including a bottom surface facing the first magnetic core and a flat top surface opposite to the bottom surface, and the flat top surface can be used as an adsorbed surface when the SMT technology is used.

Therefore, the first core of the inductive component of the present invention has a gap to store the potential energy of the inductor component, and the middle member and the peripheral member of the first core serve as horizontal closed magnetic circuits, and the second core is As a vertical closed magnetic circuit, thereby forming a magnetic path of three-dimensional magnetic flux.

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily appreciate the other advantages and functions of the present disclosure from the disclosure herein. It is to be understood that the structure, the proportions, the size and the like of the drawings are only used in conjunction with the disclosure of the specification for the understanding and reading of those skilled in the art, and are not intended to limit the implementation of the present invention. The conditions are limited, so it is not technically meaningful. Any modification of the structure, change of the proportional relationship or adjustment of the size should remain in this book without affecting the effectiveness and the purpose of the creation. The technical content revealed by the creation can be covered.

Referring first to Figures 1, 2A, 2B, 2C, 3A and 3B, the inductive component of the present invention comprises a first magnetic core 1, a second magnetic core 2 and a conductive element 3.

The first magnetic core 1 includes opposing top and bottom surfaces 11, and 12, an intermediate member 13, a peripheral member 14, a space 15, a through hole 16, a recess 17, and a first gap G.

The height of the intermediate member 13 is substantially smaller than the height of the peripheral member 14 such that the height difference between the intermediate member 13 and the peripheral member 14 acts as a space 15 for receiving the U-shaped body of the conductive member 3. The peripheral member 14 surrounds the intermediate member 13 and connects to one side of the intermediate member 13, and the through holes 16 are respectively formed at both sides of the intermediate member 13 to separate the both sides of the intermediate member 13 from the surrounding member 14, and the first gap G makes The other side of the intermediate member 13 is separated from the surrounding member 14. Further, two recesses 17 are formed on the bottom surface 12 adjacent to the through holes 16 for providing the two connecting portions 33 of the conductive member 3.

The second core 2 includes opposing top surfaces 21 and bottom surfaces 22 to form a plate-like body, wherein the top surface 21 is a flat surface as an adsorbed surface when surface-mount technology (SMT) is employed. In addition, the second magnetic core 2 covers the top surface 11 of the first magnetic core 1 with the bottom surface 22 facing the top surface 11 of the first magnetic core 1, and the area of the second magnetic core 2 is slightly larger than or equal to the first The area of the magnetic core 1 is such that the first magnetic core 1 is entirely covered without exposing the intermediate member 13 or the conductive member 3 accommodated in the space 15.

In general, the materials of the first magnetic core 1 and the second magnetic core 2 may be, for example, iron, iron alloy, iron powder, iron alloy powder, ferrite or other magnetic materials, wherein the ferrite may be nickel zinc (NiZn). Or a ferrite compound of manganese zinc (MnZn), and the iron alloy powder may include an iron-nickel-molybdenum alloy, an iron-aluminum-niobium alloy, or an iron-nickel alloy. In other words, the materials of the first magnetic core 1 and the second magnetic core 2 are materials which can serve as a path through which magnetic lines of force pass in the inductance element.

The conductive element 3 includes a bottom portion 31 and two side portions 32 constituting a U-shaped body and two connecting portions 33 extending from the two side portions 32 of the U-shaped body. As shown in FIG. 3A, the U-shaped body of the conductive member 3 surrounds the intermediate member 13 such that the bottom portion 31 is sandwiched between the intermediate member 13 and the second magnetic core 2, wherein the first gap G is substantially free of the U-shaped body. Placed, as shown in FIG. 3B, the U-shaped body of the conductive element 3 surrounds the intermediate member 13 such that the two side portions 32 extend through the through hole 16 to be sandwiched between the intermediate member 13 and the surrounding member 14, and the two connecting portions 33 The two ends extending from the bottom surface 12 of the first magnetic core 1 after the two side portions 32 are penetrated through the through holes 16 are formed by bending, thereby being parallel to the bottom surface 12 as a soldering pole for electrical connection (or bonding). Pad (PAD)). In other words, the U-shaped body and the two connecting portions 33 of the conductive member 3 may exhibit a hat-like shape. Further, the conductive member 3 is embodied as a terminal piece for current to pass therethrough, thereby generating magnetic lines of force in the first core 1 and the second core 2.

In addition, a second gap (not shown) may be formed between the first core 1 and the second core 2, for example, a high temperature tape or a pull between the first core 1 and the second core 2 The upper copper wire or the glue used to join the first magnetic core 1 and the second magnetic core 2 is doped with particles such as glass beads, thereby separating the first magnetic core 1 and the second magnetic core by using a solid having a certain size. 2 so that there is a second gap between the two. It should be noted that the first gap G of the first magnetic core 1 is generally an air gap (referred to as an air gap), which can be used for energy storage of the inductance component, thereby adjusting the inductance characteristics of the inductance component, for example, The inductance of the inductive component, the saturation current, and the like are controlled, and the second gap between the first core 1 and the second core 2 can also be used for energy storage of the sensing element, and the inductance of the second segment can be provided.

As shown in FIG. 7, the combination of the first magnetic core 1 and the conductive member 3 is a closed magnetic circuit inductance element, and the intermediate member 13 and the peripheral member 14 of the first magnetic core 1 are provided at the two side portions 32 of the conductive member 3. The closed magnetic circuit 4 on both sides parallel to the top surface 11 and the bottom surface 12, together with the second magnetic core 2, the second magnetic core 2 and the first magnetic core 1 are also provided perpendicular to the top around the bottom 31 of the conductive member 3. The closed magnetic circuit 4 of the face 11 and the bottom surface 12 becomes a total of three closed magnetic circuits 4 to constitute a magnetic path of three-dimensional magnetic flux, whereby the core is less likely to achieve magnetic saturation, whereby the inductance can be better controlled.

Next, referring to Figures 4, 5A, 5B, 5C, 6A and 6B, the inductive component of the present invention includes a first magnetic core 1', a second magnetic core 2, and a conductive element 3. The difference from the above-mentioned inductive component lies in the first magnetic core 1', and the second magnetic core 2 and the conductive element 3 are the same as those described above, and thus will not be described herein.

The first core 1' includes opposing top and bottom faces 11' and 12', intermediate member 13', peripheral member 14', space 15', through hole 16', recess 17', and first gap G'. A first gap G' is formed in the intermediate member 13' to divide the intermediate member 13' into two portions that are each connected to the peripheral member 14'. Further, as shown in FIGS. 6A and 6B, the U-shaped body of the conductive member 3 surrounds the intermediate member 13' and surrounds the first gap G', and the conductive member 3 also generates a current as shown in FIG. Three closed magnetic circuits, thereby forming a magnetic path of three-dimensional magnetic flux. In addition, in addition to the first gap G' of the first core 1', a second gap may be formed between the first core 1' and the second core 2, and a first gap G' may be provided in addition to the storage potential energy. A second inductance characteristic other than the first inductance characteristic.

The flow of the method of manufacturing the inductor element of the present invention will be briefly described below.

The first core is first provided. The first magnetic core includes opposing top and bottom surfaces, a first gap, an intermediate member, a peripheral member, and a space and a through hole between the intermediate member and the surrounding member, wherein the first gap may be formed on one side of the intermediate member The side of the intermediate member is separated from the surrounding member or formed in the intermediate member to separate the intermediate member into two portions. Further, a height difference between the intermediate member and the peripheral member is used as the space, and two through holes are formed on both sides of the intermediate member. In addition, the first magnetic core further includes two recesses formed on the bottom surface and adjacent to the two through holes.

The conductive element is then placed in the space within the first core. The two ends of the conductive member projecting from the bottom surface of the first magnetic core are bent to form two joint portions. In detail, the conductive element comprises a bottom portion and two side portions constituting the U-shaped body, and two sides of the conductive element are inserted into the two through holes of the first magnetic core to extend from the bottom end of the first magnetic core, and then two The end is bent at the two recesses of the first core to form two joints parallel to the bottom surface.

Finally, the second core is covered on the top surface of the first core. In detail, the cross-sectional area of the second core may be slightly larger than or equal to the cross-sectional area of the first core to completely cover the first core without exposing the intermediate member or conductive member therein, so that the U-shaped body of the conductive member The bottom portion can be sandwiched between the intermediate member and the second magnetic core.

In addition, a high temperature tape or wire may be placed between the first and second cores to form a second gap between the first and second cores, or a glass bead may be coated between the first and second cores. The glue of the equal particles joins the first and second cores to form a second gap between the first and second cores.

In addition, a dispensing operation may be performed to bond the first and second magnetic cores with glue, and in addition, the conductive member may buckle the intermediate member of the first magnetic core with the U-shaped body and buckle the first magnetic core with the two connecting portions. The surrounding parts are fixed. If they are more fixed, they can be glued at the bottom of the U-shaped body to make them adhere to the second core.

In summary, according to the inductive component of the present invention, the first magnetic core provides a magnetic path in a horizontal direction, and the cooperation of the second magnetic core and the first magnetic core provides a magnetic path in a vertical direction, thereby forming a magnetic path of the three-dimensional magnetic flux. In addition, the first core itself has a first gap to provide a first-stage inductance characteristic, and serves as an energy storage and control sense and saturation current, and is further reformable between the first core and the second core. The second gap provides a second segment of inductance characteristics.

The above embodiments are merely illustrative of the effects of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the above-mentioned embodiments without departing from the spirit and scope of the present invention. And change. Moreover, the number of structures in the above-described embodiments is merely illustrative and is not intended to limit the present invention. Therefore, the scope of protection of this creation should be as listed in the scope of patent application described later.

1, 1'‧‧‧ first core

11, 11' ‧ ‧ top

12, 12’‧‧‧ bottom

13, 13’‧‧‧ Middleware

14, 14' ‧ ‧ surrounding parts

15, 15’ ‧ ‧ space

16, 16’‧‧‧Tongkong

17, 17' ‧ ‧ recess

2‧‧‧second core

21‧‧‧ top surface

22‧‧‧ bottom

3‧‧‧Conducting components

31‧‧‧ bottom

32‧‧‧ side

33‧‧‧Connecting Department

4‧‧‧Closed magnetic circuit

G, G’‧‧‧ first gap

1 is an exploded view of an embodiment of an inductive component of the present invention; FIGS. 2A and 2B are respectively a combination view of different perspectives of an embodiment of the inductive component of the present invention; A bottom view of one embodiment of a magnetic core; FIG. 3A is a cross-sectional view taken along line AA of FIG. 2A; FIG. 3B is a cross-sectional view taken along line BB of FIG. 2A; FIG. 4 is an exploded view of another embodiment of the inductance element of the present invention 5A and 5B are respectively a combination view of different perspectives of another embodiment of the inductive component of the present invention; FIG. 5C is a bottom view of another embodiment of the first magnetic core of the inductive component of the present invention; 6A is a cross-sectional view taken along line AA of FIG. 5A; FIG. 6B is a cross-sectional view taken along line BB of FIG. 5A; and FIG. 7 is a schematic view showing a magnetic path of a three-dimensional magnetic flux of the inductance element of the present invention.

Claims (10)

An inductive component includes: a first magnetic core, a first gap, an intermediate member, a surrounding member surrounding and connecting the intermediate member, a space formed between the intermediate member and the surrounding member, and a through hole; The conductive element is disposed in the space of the first magnetic core and includes a U-shaped body and two connecting portions extending from the U-shaped body; and a second magnetic core covering the first magnetic core. The inductive component of claim 1, wherein the first gap is formed on one side of the first core to separate the side of the first core from the surrounding member. The inductive component of claim 1, wherein the first gap is formed in the first core to divide the first core into two portions. The inductive component of claim 1, wherein the U-shaped body of the conductive component further has a bottom portion interposed between the intermediate member and the second magnetic core, and a second portion interposed between the second magnetic core Side. The inductive component of claim 1, wherein the first magnetic core further comprises two recesses formed on a bottom surface of the first magnetic core adjacent to the two through holes for the two connecting portions to be disposed therein. The inductive component of claim 1, wherein the first magnetic core and the second magnetic core have a second gap. The inductive component of claim 1, wherein the intermediate member and the peripheral member have a height difference to form the space between the intermediate member and the peripheral member. The inductive component of claim 1, wherein the conductive component accommodated in the space does not protrude from a top surface of the first magnetic core. The inductive component according to claim 1, wherein the second magnetic core is a plate-shaped body including a bottom surface facing the first magnetic core and a flat top surface opposite to the bottom surface. The inductive component of claim 1, which has a magnetic path of three-dimensional magnetic flux.