CN221466405U - Inductor with built-in soft magnetic conductive piece - Google Patents
Inductor with built-in soft magnetic conductive piece Download PDFInfo
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- CN221466405U CN221466405U CN202322655959.6U CN202322655959U CN221466405U CN 221466405 U CN221466405 U CN 221466405U CN 202322655959 U CN202322655959 U CN 202322655959U CN 221466405 U CN221466405 U CN 221466405U
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- inductor
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- magnetic core
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- 239000000463 material Substances 0.000 claims abstract description 20
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 9
- 239000006247 magnetic powder Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 abstract description 3
- 239000007779 soft material Substances 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 39
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model provides an inductor with a built-in soft magnetic conduction piece, which comprises a box body, wherein a box inner cavity is formed in the box body, an annular magnetic core is arranged in the box inner cavity, and the inner ring side of the annular magnetic core is provided with the soft magnetic conduction piece made of soft magnetic conduction materials. In the inductor structure, differential mode and common mode inductance components can be generated through the arrangement of the annular magnetic core and the annular magnetic core inner annular magnetic conduction piece, so that the application of common differential mode inductance is realized; meanwhile, the soft magnetic conducting piece made of soft magnetic conducting materials is arranged on the inner ring side of the annular magnetic core, and the soft material characteristic of the magnetic conducting piece can avoid hard touch between the magnetic conducting piece and the annular magnetic core, so that the damage possibility of the inductor is reduced.
Description
Technical Field
The utility model relates to the technical field of inductor structures, in particular to an inductor with a built-in soft magnetic conduction piece.
Background
Electromagnetic interference is an electronic noise that interferes with the cable signal and reduces signal integrity, and can be classified into common mode interference and differential mode interference according to waveforms. Common mode interference means that the amplitudes of interference currents on two directions are equal and the directions are the same, while differential mode interference means that the amplitudes of interference currents on two directions are equal and the directions are opposite, and the interference is overlapped and mixed with transmission signals of a transmission line, and cannot be generally distinguished. In general, the differential mode interference has small amplitude, low frequency and small interference; the common mode interference has large amplitude and high frequency, and can generate radiation through a wire, so that the interference is large. In view of the above, in most anti-electromagnetic interference modules, only the common-mode filter inductance is often used and the differential-mode filter inductance that has less interference with the electronic device is often omitted. However, this method is difficult to achieve a good effect, and the filter circuit cost is high when two kinds of inductors are used at the same time, so that the common-differential mode integrated inductor is widely popularized.
In the inductor structure in the prior art, as disclosed in patent document 202122350494.4, a closed annular magnetic core is selected, a magnetic core center pillar is assembled on the inner ring side of the magnetic core, the magnetic core center pillar is selected as a magnetic core for generating a differential mode inductance component, the closed magnetic core is a magnetic core for generating a common mode inductance component, and the corresponding magnetic core material is selected as an alloy material in the prior art, wherein the alloy material magnetic core has hardness and a certain degree of brittleness; when the magnetic core center pillar is assembled with the closed magnetic core, the assembly contact is compact, and the closed magnetic core or the magnetic core center pillar is easy to crack due to the installation operation error, so that the inductor is scrapped.
Disclosure of utility model
The utility model aims to provide an inductor with a built-in soft magnetic conduction piece, which overcomes the defects of the prior art.
The inductor with the soft magnetic conduction piece inside comprises a box body, wherein a box inner cavity is formed in the box body, an annular magnetic core is arranged in the box inner cavity, and the soft magnetic conduction piece made of soft magnetic conduction materials is arranged on the inner ring side of the annular magnetic core.
Further, the annular magnetic core is in a racetrack shape and a rounded rectangular ring shape.
Further, the box body comprises a bottom plate, the periphery of the bottom plate extends upwards to form a box outer wall, a cover plate is detachably arranged on the upper side of the box outer wall, and a box inner cavity is formed among the cover plate, the inner side of the box outer wall and the bottom plate; the bottom plate shape is adapted to the annular magnetic core shape.
Further, the bottom plate is rectangular overall, three ends of the bottom plate are provided with round corner ends, and one end of the bottom plate is provided with a right angle end.
Further, two groups of positioning cylinders are arranged in the box body corresponding to the inner ring side of the annular magnetic core in a vertically penetrating way; the soft magnetic conduction piece is arranged between the two groups of positioning cylinders.
Further, the outer periphery of the positioning cylinder is rectangular.
Further, at least one side of the soft magnetic conduction piece is contacted with the side face of the inner ring side of the annular magnetic core.
Further, the soft magnetic conductive piece is formed by mixing adhesive materials and magnetic powder attached to the adhesive materials; the soft magnetic conduction piece is made to be at least one side of the soft magnetic conduction piece to be in adhesion contact with the inner ring side surface of the annular magnetic core through the adhesion characteristic of the adhesive material.
Further, the soft magnetic conduction piece is formed by combining soft rubber materials and magnetic powder mixed on the soft rubber materials; the soft magnetic conduction piece is positioned and installed in the inner cavity of the box, so that one side of the soft rubber material of the soft magnetic conduction piece is contacted with the side face of the inner ring side of the annular magnetic core.
Further, two sides of the soft magnetic conduction piece are contacted with symmetrical two side surfaces of the inner ring side of the annular magnetic core.
The utility model has the beneficial effects that:
In the inductor structure, differential mode and common mode inductance components can be generated through the arrangement of the annular magnetic core and the annular magnetic core inner annular magnetic conduction piece, so that the application of common differential mode inductance is realized; meanwhile, the soft magnetic conducting piece made of soft magnetic conducting materials is arranged on the inner ring side of the annular magnetic core, and the soft material characteristic of the magnetic conducting piece can avoid hard touch between the magnetic conducting piece and the annular magnetic core, so that the damage possibility of the inductor is reduced.
Drawings
FIG. 1 is a schematic diagram of a box structure of an inductor according to the present utility model;
Fig. 2 is a schematic diagram showing the structure of an inductor according to embodiment 1 of the present utility model;
Fig. 3 is a schematic diagram showing the structure of an inductor according to embodiment 2 of the present utility model;
Fig. 4 is a schematic diagram showing the structure of an inductor according to embodiment 3 of the present utility model.
Reference numerals illustrate:
The box body 1, the bottom plate 11, the round corner end 111, the right angle end 112, the box outer wall 12, the positioning cylinder 13, the anti-slip strip 131, the connecting piece 14, the cover plate 15, the plate opening 151,
A ring-shaped magnetic core 2 and a soft magnetic conduction piece 3.
Detailed Description
In order to make the technical scheme, the purpose and the advantages of the utility model more clear, the utility model is further explained below with reference to the drawings and the embodiments.
As shown in fig. 1 to 4, the inductor with the soft magnetic conducting piece 3 arranged inside according to the present utility model includes a case 1, a case cavity is formed in the case 1, an annular magnetic core 2 is disposed in the case cavity, and the soft magnetic conducting piece 3 made of soft magnetic conducting material is disposed on the inner ring side of the annular magnetic core 2.
As the foundation structure application, annular magnetic core 2 is the round angle rectangle annular of runway shape, box body 1 includes bottom plate 11, bottom plate 11 periphery vertically upwards extends and sets up box outer wall 12, bottom plate 11 shape with annular magnetic core 2 shape adaptation and whole are the rectangle form, bottom plate 11 includes the round angle end 111 that the round angle set up and right angle end 112 that the right angle set up, bottom plate 11 three end sets up round angle end 111 and one end sets up right angle end 112.
In the arrangement of the inductor, the toroidal core 2 is not effective for direct positioning in the box cavity after assembly; conventionally, insulating adhesive is injected between the outer side of the annular magnetic core 2 and the inner side of the outer wall 12 of the case, so that the annular magnetic core 2 is adhered and fixed on the case 1. Based on the box body 1, the right-angle end 112 is arranged, so that the end angle of one side of the box body 1 forms an injection position for injecting insulating adhesive, and the requirement of the installation and fixation of the internal structure of the inductor is met.
In order to meet the requirements of the inductor for external assembly applications, the connection piece 14 is extended in the base plate 11 and/or the box outer wall 12, and as a preferred embodiment, the connection piece 14 is integrally injection-molded with the base plate 11 and the box outer wall 12.
A cover plate 15 is detachably arranged on the upper side of the outer wall 12 of the box, and two side plate openings 151 are formed in the middle of the cover plate 15; the middle part of the bottom plate 11 is provided with two side bottom openings, and the upper sides of the two bottom openings are vertically provided with positioning cylinders 13 in an extending mode; the two plate openings 151 are arranged in a position matching way with the two positioning cylinders 13, and the bottom openings are communicated with the plate openings 151 up and down through the positioning cylinders 13; the cover plate 15, the inner side of the outer wall 12 of the box, the outer side of the positioning cylinder 13 and the bottom plate 11 form a box inner cavity for placing the annular magnetic core 2 structure and the magnetic conduction piece in the inductor.
In the utility model, the annular magnetic core 2 is arranged between the inner side of the outer wall 12 of the box and the outer peripheral position of the positioning cylinder 13; the soft magnetic conduction piece 3 is arranged between the two groups of positioning cylinders 13; in order to ensure stable installation of the soft magnetic member 3, the positioning cylinder 13 has a rectangular outer shape, and the two opposite cylinder sides of the positioning cylinder 13 are provided with anti-slip strips 131.
The following is an example of a specific application and arrangement of the soft magnetic element 3 in the inductor structure:
Example 1:
as shown in fig. 2, the soft magnetic conductive member 3 is a glue magnetic conductive member with adhesive property formed by mixing glue material and magnetic powder attached to the glue material. When the adhesive magnetic conduction piece is selected, both sides of the adhesive magnetic conduction piece are adhered and contacted on the side surface of the inner ring side of the annular magnetic core 2 through the adhesion characteristic of the adhesive material; the two sides of the viscose magnetic conduction piece are adhered and contacted with symmetrical two side surfaces of the inner ring side of the annular magnetic core 2.
Example 2:
As shown in fig. 3, the soft magnetic conductive member 3 is a soft magnetic conductive member with no adhesive property, which is formed by combining a soft rubber material and magnetic powder mixed on the soft rubber material. When the soft magnetic conductive member is selected, the soft magnetic conductive member 3 is positioned and mounted between the positioning cylinders 13 at two sides, and at least one end of the soft magnetic conductive member is contacted with the side surface of the inner ring side of the annular magnetic core 2. In the application of the embodiment, one end of the soft magnetic conduction piece 3 is contacted with the side surface of the inner ring side of the ring-shaped magnetic core 2; the other end of the magnetic core is spaced from the inner side surface of the annular magnetic core 2.
Example 3:
As shown in fig. 4, the soft magnetic conductive member 3 may be disposed at two symmetrical side surfaces of the inner ring side of the toroidal core 2.
When the soft magnetic conductive member 3 is made of soft rubber, the soft magnetic conductive member 3 is pressed and positioned between the anti-slip strips 131 at two sides to form positioning installation.
The foregoing is merely a preferred embodiment of the present utility model, and modifications of the embodiments described above can be made by those skilled in the art without departing from the implementation principles of the present utility model, and the corresponding modifications should also be considered as the protection scope of the present utility model.
Claims (10)
1. The inductor with the soft magnetic conduction piece is characterized by comprising a box body, wherein a box inner cavity is formed in the box body, an annular magnetic core is arranged in the box inner cavity, and the inner ring side of the annular magnetic core is provided with the soft magnetic conduction piece made of soft magnetic conduction materials.
2. The inductor of claim 1, wherein the toroidal core is in the shape of a racetrack rounded rectangular ring.
3. The inductor as claimed in claim 2 wherein said case includes a bottom plate, said bottom plate having a peripheral edge extending vertically upwardly from a case outer wall, said case outer wall having a cover removably disposed thereon, said cover, inner side of said case outer wall and bottom plate defining said case cavity therebetween; the bottom plate shape is adapted to the annular magnetic core shape.
4. The inductor of claim 3 wherein said base plate is generally rectangular in shape, said base plate having rounded ends at three ends and right angle ends at one end.
5. The inductor as claimed in claim 1, wherein two sets of positioning cylinders are provided in the case corresponding to the inner ring side of the toroidal core in a vertically penetrating manner; the soft magnetic conduction piece is arranged between the two groups of positioning cylinders.
6. The inductor of claim 5 wherein said positioning cylinder has a rectangular peripheral shape.
7. An inductor according to any one of claims 1 to 6, wherein at least one side of the soft magnetic member is in contact with an inner annular side surface of the toroidal core.
8. The inductor of claim 7 wherein said soft magnetic conductive member is formed by mixing a glue material and magnetic powder attached to the glue material; the soft magnetic conduction piece is made to be at least one side of the soft magnetic conduction piece to be in adhesion contact with the inner ring side surface of the annular magnetic core through the adhesion characteristic of the adhesive material.
9. The inductor of claim 8 wherein said soft magnetic conductive member is formed of a combination of a soft gel material and magnetic powder mixed on the soft gel material; the soft magnetic conduction piece is positioned and installed in the inner cavity of the box, so that one side of the soft rubber material of the soft magnetic conduction piece is contacted with the side face of the inner ring side of the annular magnetic core.
10. The inductor of claim 8 wherein said soft magnetic member is contacted on both sides by symmetrical sides of an inner ring side of said toroidal core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322655959.6U CN221466405U (en) | 2023-09-28 | 2023-09-28 | Inductor with built-in soft magnetic conductive piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322655959.6U CN221466405U (en) | 2023-09-28 | 2023-09-28 | Inductor with built-in soft magnetic conductive piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221466405U true CN221466405U (en) | 2024-08-02 |
Family
ID=92341855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322655959.6U Active CN221466405U (en) | 2023-09-28 | 2023-09-28 | Inductor with built-in soft magnetic conductive piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221466405U (en) |
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2023
- 2023-09-28 CN CN202322655959.6U patent/CN221466405U/en active Active
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