CN219143941U

CN219143941U - Mould pressing inductance

Info

Publication number: CN219143941U
Application number: CN202223058358.9U
Authority: CN
Inventors: 杨雪薇; 刘开煌; 虞成城
Original assignee: Shenzhen Sunway Communication Co Ltd
Current assignee: Shenzhen Sunway Communication Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-06-06
Anticipated expiration: 2032-11-17

Abstract

The utility model provides a molded inductor which comprises a magnetic core seat, an electrode arranged on one side of the magnetic core seat far away from a center pillar, a coil conductor sleeved on a bottom plate and a magnetic core cover arranged on the magnetic core seat, wherein the magnetic seat comprises the center pillar and the bottom plate which are mutually connected, two ends of the coil conductor respectively penetrate through the bottom plate to be connected with the electrode, and the coil conductor is wrapped by the magnetic core cover, so that the molded inductor has the effects of high inductance value and low direct current resistance.

Description

Mould pressing inductance

Technical Field

The utility model relates to the technical field of inductors, in particular to a molded inductor.

Background

An inductor is made by winding one or more sets of coil conductors on a magnetic material. When a varying current flows through the coil, it is inevitable that some eddy current loss occurs according to the law of electromagnetic induction.

In general, in the process of manufacturing the inductor, the magnetic powder used in the inductor is subjected to an insulating passivation treatment to block the eddy current path. Because the magnetic powder has small particles, passivation treatment is difficult, and the problems of non-uniformity, easy falling, aging resistance and the like are easy to exist. For insulation purposes, it is often necessary to form a thickness of several tens to several hundreds of nanometers, resulting in a significant decrease in the permeability of the magnetic material.

Disclosure of Invention

The utility model mainly aims to solve the defects of the prior art and provides a molded inductor.

The utility model provides a molded inductor which comprises a magnetic core seat, a coil conductor sleeved on a bottom plate and a magnetic core cover arranged on the magnetic core seat, wherein the magnetic core seat comprises a center post and a bottom plate which are connected with each other, two ends of the coil conductor are respectively provided with an electrode penetrating through the bottom plate and being attached to one side, far away from the center post, of the bottom plate, and the magnetic core cover wraps the coil conductor.

Preferably, the bottom plate is provided with a first insert and a second insert, and the first insert and the second insert are respectively and symmetrically arranged on two sides of the bottom plate.

Preferably, the two ends of the coil conductor pass through the corresponding first insert and second insert respectively, and the electrode and the end of the coil conductor are integrally formed.

Preferably, the magnetic core seat is a first magnetic powder, a second magnetic powder and a third magnetic powder, and the first magnetic powder, the second magnetic powder and the third magnetic powder are all of different types.

Preferably, the bottom plate is made of first magnetic powder, second magnetic powder and third magnetic powder, and the center pillar is made of second magnetic powder, wherein the first magnetic powder is arranged on one side of the bottom plate far away from the center pillar.

Preferably, the second magnetic powder is disposed on a side of the bottom plate close to the center pillar.

Preferably, the magnetic permeability of the first magnetic powder is lower than the magnetic permeability of the second magnetic powder.

Preferably, the first insert and the second insert are both made of a third magnetic powder.

Preferably, the magnetic core cover is made of fourth magnetic powder, and the magnetic permeability of the third magnetic powder is lower than that of the fourth magnetic powder.

The utility model has the beneficial effects that: the utility model provides a mould pressing inductance, it includes the magnetic core seat, overlaps locates coil conductor and install on the bottom plate magnetic core seat is last magnetic core lid, the magnetic core seat includes interconnect's center pillar and bottom plate, coil conductor's both ends are equipped with respectively and pass the bottom plate and keep away from the electrode of laminating of one side of center pillar with the bottom plate, magnetic core lid is wrapped up the coil conductor to the inductance value of the mould pressing inductance that obtains is high and the effect that direct current resistance is low.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of an embodiment of the present utility model;

FIG. 3 is a bottom view of an embodiment of the present utility model;

fig. 4 is a front view of an embodiment of the present utility model.

The reference numbers in the figures are as follows:

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs.

The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a molded inductor, which includes a magnetic core base 100, a coil conductor 200 sleeved on the base 102, and a magnetic core cover 300 mounted on the magnetic core base 100, wherein the magnetic core base includes a center pillar 101 and a base 102 that are connected to each other, two ends of the coil conductor 200 are respectively provided with an electrode 400 penetrating through the base 102 and attached to a side of the base 102 away from the center pillar 101, and the magnetic core cover 300 wraps the coil conductor 200.

Specifically, the center pillar 101 is disposed at the center of the bottom plate 102, the center pillar 101 is a round rectangular pillar, the coil conductor 200 is wound around the round rectangular pillar, and three to four turns and two layers are wound around the round rectangular pillar, and two ends of the coil conductor 200 are embedded in the bottom plate 102 and extend out of the bottom plate 102 to be disposed on one side of the bottom plate 102 far away from the center pillar 101, where the coil conductor 200 is not only directly wound on the center pillar 101 in the above-mentioned manner, but also the coil conductor 200 can be wound on a previously prepared mold to obtain an air core coil conductor, and then the air core coil conductor is directly sleeved on the center pillar to complete the installation.

Further, the base plate 102 is provided with a first insert 1021 and a second insert 1022, and the first insert 1021 and the second insert 1022 are symmetrically disposed on both sides of the base plate 102, respectively.

Referring to fig. 2, the first slug 1021 and the second slug 1022 are substantially the same structure and are disposed at different positions on the base plate 102, wherein it should be noted that the first slug 1021 and the second slug 1022 are not structures extending on the base plate 102, but are structures extending on the base plate 102 body, and as can be seen from fig. 2, the first slug 1021 and the second slug 1022 are two opposite corners on one side of the base plate 102, and both ends of the coil conductor 200 are respectively extended to the opposite corners and are respectively embedded in the first slug 1021 and the second slug 1022.

Further, both ends of the coil conductor 200 pass through the corresponding first slug 1021 and second slug 1022, respectively, and the electrode 400 is integrally formed with the end of the coil conductor 200.

Specifically, in this embodiment, the electrode 400 is attached to the side of the bottom plate 102 remote from the center post 101 by passing the end of the coil conductor 200 through the first slug 1021 or the second slug 1022 and folding over, and by treating the end, including but not limited to heat treating, grinding, rolling, stripping, and plating.

Further, the magnetic core holder 100 is a first magnetic powder, a second magnetic powder, and a third magnetic powder, which are all different types.

Specifically, the traditional molded inductor is formed by injection molding of plastic raw materials and an air coil, is mainly used for various remote control anti-theft devices and other wireless receiving products, and has the characteristics of higher Q value, stable frequency, pressure resistance, high temperature resistance, good welding resistance and easy tin plating; the built-in adjusting rod copper core, aluminum core, magnetic core, adjustable scope is big, torsion is unanimous etc. when the frequency modulation, and the shell of mould pressing inductance in this embodiment is for several different types of magnetic powder preparation, and the magnetic core seat sets up two kinds of different types of magnetic powder, compares in only setting up the individual layer magnetic powder, can improve inductance value.

Further, the bottom plate 102 is made of first magnetic powder, second magnetic powder and third magnetic powder, wherein the first magnetic powder is placed on one side of the bottom plate 102 far away from the center pillar 101, the second magnetic powder is placed on one side of the bottom plate 102 near the center pillar 101, and the center pillar 101 is made of the second magnetic powder.

Specifically, when the magnetic core holder 100 is manufactured, the first magnetic powder and the second magnetic powder are sequentially filled in a mold which is pre-customized, so that the first magnetic powder is uniformly distributed on one side of the bottom plate 102 far from the center pillar 101 and the second magnetic powder is uniformly distributed on one side of the bottom plate 102 near the center pillar 101 and comprises the center pillar 101 when the magnetic core holder 100 is formed.

Further, the magnetic permeability of the first magnetic powder is lower than the magnetic permeability of the second magnetic powder.

Further, the first insert 1021 and the second insert 1022 are both made of third magnetic powder.

Further, the core cover 300 is made of fourth magnetic powder, and the magnetic permeability of the third magnetic powder is lower than that of the fourth magnetic powder.

Specifically, according to the induced current generation principle, the magnetic powder with high magnetic conductivity is arranged at a position far away from the electrode, so that the voltage breakdown requirement of the magnetic powder can be effectively reduced, and if the same magnetic conductivity is achieved: the two different kinds of magnetic powder are arranged, so that the use amount of the magnetic powder and/or the number of turns of coil winding can be reduced compared with the arrangement of only a single magnetic powder, and the volume of the inductor is reduced.

The foregoing is merely exemplary of the utility model, and it should be noted that modifications could be made by those skilled in the art without departing from the inventive concept, which fall within the scope of the utility model.

Claims

1. A molded inductor, comprising:

the magnetic core seat comprises a center column and a bottom plate which are connected with each other;

the coil conductors are sleeved on the bottom plate, and electrodes penetrating through the bottom plate and attached to one side, far away from the center column, of the bottom plate are respectively arranged at two ends of the coil conductors;

and the magnetic core cover is arranged on the magnetic core seat and wraps the coil conductor.

2. The molded inductor of claim 1, wherein the base plate has a first insert and a second insert, the first insert and the second insert being symmetrically disposed on opposite sides of the base plate.

3. The molded inductor of claim 2, wherein the coil conductor has two ends that pass through the corresponding first and second inserts, respectively, the electrodes being integrally formed with the ends of the coil conductor.

4. The molded inductor of claim 2, wherein the core print is a first magnetic powder, a second magnetic powder, and a third magnetic powder, the first magnetic powder, the second magnetic powder, and the third magnetic powder being different types of magnetic powder.

5. The molded inductor of claim 4, wherein the bottom plate is made of first magnetic powder, second magnetic powder and third magnetic powder, and the center pillar is made of second magnetic powder, wherein the first magnetic powder is disposed on a side of the bottom plate away from the center pillar.

6. The molded inductor of claim 5, wherein the second magnetic powder is disposed on a side of the base plate adjacent to the center post.

7. The molded inductor of claim 6, wherein the magnetic permeability of the first magnetic powder is lower than the magnetic permeability of the second magnetic powder.

8. The molded inductor of claim 7, wherein the first slug and the second slug are each formed of a third magnetic powder.

9. The molded inductor of claim 8, wherein the core cover is made of a fourth magnetic powder having a permeability lower than the permeability of the fourth magnetic powder.