CN212257146U

CN212257146U - Inductor

Info

Publication number: CN212257146U
Application number: CN202021481689.1U
Authority: CN
Inventors: 王正庭; 谭隆竞; 罗鹏程
Original assignee: Magic Electronic Technology Shenzhen Co ltd
Current assignee: Magic Electronic Technology Shenzhen Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2020-12-29
Anticipated expiration: 2030-07-23

Abstract

The utility model discloses an inductor, including core and conductor, wherein, the core has top recess, two end recesses and runs through the core and intercommunication the top recess reaches two through-holes of end recess, the conductor has plane portion, two pin portions and two connecting portion, two connecting portions are located respectively in two through-holes of core and connect two pin portions reach plane portion, so that plane portion is located in the top recess, and make two pin portions do not are located in the two end recesses, the core is made for the material that has slight distributed air gap. The utility model discloses can reduce the air gap loss.

Description

Inductor

Technical Field

The utility model relates to an inductor field especially relates to an inductor that can reduce air gap loss.

Background

As shown in fig. 1, a conventional inductor 1 with low inductance and large current includes an upper core 11, a lower core 12, a spacer 13, an adhesive 14 and a coil 15, wherein the spacer 13 is disposed between the upper core 11 and the lower core 12, so that a gap is generated due to the thickness of the spacer 13 after the upper core 11 and the lower core 12 are bonded, and the adhesive 14 is coated on the surfaces of the upper core 11 and the lower core 12 which are not shielded by the spacer 13 to adhere the upper core 11 and the lower core 12.

However, when the contact area between the spacer 13 and the upper core 11 and the lower core 12 is too large, the adhesive 14 may be coated on the surfaces of the upper core 11 and the lower core 12, the area for adhering the upper core 11 and the lower core 12 is too small, and the upper core 11 and the lower core 12 cannot be firmly adhered, so that the adhesion stability of the upper core 11 and the lower core 12 is insufficient and the upper core 11 and the lower core 12 fall off. In addition, the conventional inductor 1 achieves inductance characteristics by generating a Gap between the upper core 11 and the lower core 12 through the spacer 13, and the Gap inevitably causes a Gap loss (Gap loss) to degrade the performance of the inductor.

Therefore, how to provide an inductor capable of solving the above problems is one of the issues to be solved in the present industry.

SUMMERY OF THE UTILITY MODEL

For solving at least the above problem, the utility model provides a technical scheme that technical problem adopted as follows:

in a first aspect, an embodiment of the present invention provides an inductor, wherein the inductor includes:

the core body is provided with a top groove, two bottom grooves and two through holes, wherein the top groove is arranged on the top surface of the core body, the two bottom grooves are arranged on the bottom surface of the core body, and the two through holes penetrate through the core body to communicate the top groove and the two bottom grooves;

a conductor having a planar portion, two pin portions and two connecting portions, wherein the two connecting portions are respectively disposed in the two through holes of the core and connect the two pin portions and the planar portion, so that the planar portion is located in the top groove and the two pin portions are respectively located in the bottom groove;

wherein, the core is made of material with fine distributed air gaps.

In one embodiment, the material of the finely dispersed air gaps is an alloy material.

In one embodiment, the alloy material is iron-silicon-aluminum, iron-silicon, iron-nickel, or iron-nickel-manganese.

In one embodiment, the size of the planar portion of the conductor is a size corresponding to the size of the top groove of the core.

In one embodiment, the two lead portions are connected to one end of the two connecting portions by their side edges.

In one embodiment, the conductor is integrally formed.

In one embodiment, the core is integrally formed.

In one embodiment, the conductor is made of copper.

In one embodiment, the planar portion of the conductor is flush with the top surface of the core.

In one embodiment, the two pin portions of the conductor are flush with the bottom surface of the core.

The utility model has the advantages that: the utility model discloses an inductor, including core and conductor, wherein, the core has top recess, two end recesses and runs through the core and intercommunication the top recess reaches two through-holes of end recess, the conductor has plane portion, two pin portions and two connecting portion, two connecting portions are located respectively in two through-holes of core and connect two pin portions reach plane portion, so that plane portion is located in the top recess, and make two pin portions do not are located in the two end recesses, the core is made for the material that has slight distributed air gap. The utility model discloses can reduce the air gap loss.

Drawings

Fig. 1 is a schematic diagram of a prior art inductor.

Fig. 2 is a top view of the core of the inductor of the present invention.

Fig. 3 is a bottom view of the core of the inductor of the present invention.

Fig. 4 is a schematic diagram of a conductor of an inductor of the present invention.

Fig. 5 is a top view of the assembled inductor of the present invention.

Fig. 6 is a bottom view of the assembled inductor of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

Referring to fig. 2, fig. 3 and fig. 4, the inductor 2 of the present invention includes a core 21 and a conductor 22. The core 21 has a top recess 211, two bottom recesses 212, two through holes 213, a top surface 214 and a bottom surface 215, and the conductor 22 has a planar portion 221, two lead portions 222 and two connecting portions 223.

In the present embodiment, the top recess 211 of the core 21 is disposed on the top surface 214 (which may be disposed at the center of the top surface 214), the two bottom recesses 212 are disposed on the bottom surface 215 (which may be disposed at the bottom surface 215 adjacent to the side surface 216), and the two through holes 213 penetrate through the core 21 to further communicate the top recess 211 and the two bottom recesses 212.

In addition, two connecting portions 223 of the conductor 22 are respectively disposed in the two through holes 213 of the core body 21, one end of the connecting portion 223 is connected to the planar portion 221 (for example, vertically connected), and the other end is connected to the two lead portions 222, so that the conductor 22 can have a U-shaped structure, and the two connecting portions 223 are parallel to each other. In the present embodiment, after the conductor 22 is disposed in the core 21, the planar portion 221 connected by the two connecting portions 223 may be located in the top groove 211 of the core 21, and the two pin portions 222 connected by the two connecting portions 223 may be located in the two bottom grooves 212 of the core 21.

In one embodiment, the core 21 is made of a material with fine distributed air gaps, such as an alloy material (fe-si-al, fe-si, fe-ni-mn, etc.), but the invention is not limited thereto. The material with the fine dispersion type air gap means that the material itself has fine and evenly dispersed pores, and the fine dispersion type air gap can be used to control the inductance and saturation current of the inductor 2.

In one embodiment, the size of the planar portion 221 of the conductor 22 corresponds to the size of the top recess 211 of the core 21, and the planar portion 221 may have a complete plane for providing adhesion during SMT operations. The two lead portions 222 of the conductor 22 are connected to one ends of the two connection portions 223 at their side edges. Specifically, in the manufacturing process, the conductor 22 having the planar portion 221 and the two connecting portions 223 may be inserted into the through hole 213 of the core body 21 through the two connecting portions 223, so that the planar portion 221 is disposed in the top recess 211 of the core body 21. At this time, the two connecting portions 223 are disposed through the through hole 213 and exposed at the end portion of the through hole 213, and can be bent (for example, bent by 90 degrees) toward the side surface 216 of the core body 21 to form two lead portions 222, so that the two lead portions 222 are simultaneously accommodated in the bottom groove 212 of the core body 21. In other words, conductor 22 may actually be considered a metal clip (clip) clamped to core 21.

In an embodiment, the conductor 22 may be integrally formed, and the core 21 may also be integrally formed, but the invention is not limited thereto.

In another embodiment, the conductor 22 may be formed by stamping and made of copper, but the invention is not limited thereto.

Referring to fig. 5 and 6, after the conductor 22 of the inductor 2 of the present invention is disposed in the core 21, the plane portion 221 of the conductor 22 is flush with the top surface 214 of the core 21, and the two lead portions 222 of the conductor 22 are flush with the bottom surface 215 of the core 21, so that the two lead portions 222 can be used as electrical contacts (pads) connected to a circuit board.

To sum up, through the utility model discloses a structural design between top recess, two end recess and two through-holes of core and the plane portion of conductor, two pin portions and two connecting portion in the inductor, when SMT operation, the machine accessible holds the plane portion of conductor and sucks the inductor is whole, satisfies user's SMT paster and inhales a demand. Additionally, through the utility model discloses a technical feature that the core of inductor is made for the material that has slight dispersion type air gap, the air gap need not be opened to core itself, also can control the inductance value height of inductor through slight dispersion type air gap, the event the utility model discloses can reduce the air gap loss.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. An inductor, characterized in that the inductor comprises:

wherein, the core is made of material with fine distributed air gaps.

2. The inductor as claimed in claim 1, wherein the material of the finely dispersed air gaps is an alloy material.

3. The inductor according to claim 2, wherein the alloy material is iron-silicon-aluminum, iron-silicon, iron-nickel, or iron-nickel-manganese.

4. The inductor of claim 1, wherein the size of the planar portion of the conductor is a size corresponding to the top groove of the core.

5. The inductor as claimed in claim 1, wherein the two lead portions are connected to one ends of the two connection portions at sides thereof.

6. The inductor of claim 1, wherein the conductor is integrally formed.

7. The inductor as recited in claim 1, wherein the core is integrally formed.

8. The inductor of claim 1, wherein the conductor is copper.

9. The inductor of claim 1, wherein the planar portion of the conductor is flush with the top surface of the core.

10. The inductor of claim 1, wherein the two leg portions of the conductor are flush with the bottom surface of the core.