CN210429462U - Chip common mode inductor - Google Patents
Chip common mode inductor Download PDFInfo
- Publication number
- CN210429462U CN210429462U CN201921480017.6U CN201921480017U CN210429462U CN 210429462 U CN210429462 U CN 210429462U CN 201921480017 U CN201921480017 U CN 201921480017U CN 210429462 U CN210429462 U CN 210429462U
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- China
- Prior art keywords
- coil
- magnetic core
- base
- sleeve
- mode inductor
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- Expired - Fee Related
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- 238000004804 winding Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a piece formula common mode inductance, the on-line screen storage device comprises a base, the base includes the bottom plate, and the both sides of bottom plate all are connected with the curb plate perpendicularly, are provided with the magnetic core in the base, and the both ends of magnetic core and the curb plate fixed connection of base both sides, the winding of magnetic core surface have first coil, and the sleeve has been cup jointed in the outside of first coil, and the winding of telescopic outside has the second coil, and the top surface of every curb plate is equipped with two pads, and first coil and second coil all include two and draw forth the end, draw forth end and pad one-to-one welding. The utility model discloses a mode that the stromatolite cover was established is with two sets of coil combinations in same bar magnetic core to carry out the separation and fix the coil through sleeve and curb plate, make whole inductor overall structure compact, stable, make the inductor more miniaturized, the piece formula on the basis of being convenient for install and enough inductance value, be applicable to more in the table pastes the circuit.
Description
Technical Field
The utility model relates to an electronic components field especially relates to a piece formula common mode inductance.
Background
Common mode inductors, also called common mode chokes, are commonly used in switching power supplies of computers to filter common mode electromagnetic interference signals. In the board design, the common mode inductor also plays a role in EMI filtering, and is used for inhibiting electromagnetic waves generated by the high-speed signal line from radiating and emitting outwards.
The conventional common mode inductor is manufactured by directly winding an enameled wire on a magnetic core, and directly welding a wire leading-out end wound on the magnetic core, wherein the inductor is in a plug-in type structure. However, with the rise of surface mount technology, the demand of various electronic and electrical equipment products for surface mount electronic components is increasing, and the conventional common mode inductor cannot meet the market requirements. At present, the conventional surface-mounted common mode inductor adopts two magnetic cores, and enameled wires are wound on the two magnetic cores respectively, so that the volume of the whole common mode inductor is large, and the requirements of miniaturization and surface-mounted technology are not met.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model adopts the following technical scheme: the utility model provides a piece formula common mode inductance, includes the base, the base includes the bottom plate, the both sides of bottom plate all are connected with the curb plate perpendicularly, be provided with the magnetic core in the base, the both ends of magnetic core and the curb plate fixed connection of base both sides, the winding of magnetic core surface has first coil, the sleeve has been cup jointed in the outside of first coil, the winding of telescopic outside has the second coil, the top surface of every curb plate is equipped with two pads, first coil and second coil all include two and draw forth the end, draw forth end and pad one-to-one welding.
The technical scheme can be further perfected as follows.
Further, the length of the sleeve is smaller than the distance between the two side plates, the side plates are provided with positioning holes, the end portions of the sleeve are provided with positioning columns, and the positioning holes are matched with the positioning columns.
Furthermore, the number of the positioning holes and the positioning columns is more than or equal to two.
Furthermore, the windings of the first coil and the second coil are both flat copper wires.
Furthermore, the thickness of the bottom plate is 0.5-1 mm.
Furthermore, the magnetic core is flat, and the magnetic core and the bottom plate are parallel to each other.
Furthermore, the first coil and the second coil are formed by single-layer winding, and the length of the first coil and the length of the second coil are equal to the distance between the two side plates.
The utility model has the advantages that: compare in current common mode inductance, the utility model discloses a mode that the stromatolite cover was established is with two sets of coil combinations in same bar magnetic core to carry out the separation and fix the coil through sleeve and curb plate, make whole inductor overall structure compact, stable, make inductor miniaturization more, the piece formula on the basis of be convenient for installation and enough inductance value, be applicable to more in the table pastes the circuit.
Drawings
The figures further illustrate the invention, but the embodiments in the figures do not constitute any limitation of the invention.
Fig. 1 is a schematic half-sectional view of a chip common mode inductor according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a chip common mode inductor according to an embodiment of the present invention.
In the figure: 1-base, 11-bottom plate, 12-side plate, 2-magnetic core, 3-first coil, 4-sleeve, 41-positioning column, 42-positioning hole, 5-second coil, 6-bonding pad and 61-leading-out terminal
Detailed Description
To further understand the contents, features and functions of the present invention, the following embodiments are described.
As shown in fig. 1-2, an embodiment of the utility model provides a slice formula common mode inductance, including base 1, base 1 includes bottom plate 11, bottom plate 11's both sides all are connected with curb plate 12 perpendicularly, be provided with magnetic core 2 in the base 1, the both ends of magnetic core 2 and the curb plate 12 fixed connection of base 1 both sides, 2 surface winding of magnetic core have first coil 3, sleeve 4 has been cup jointed in the outside of first coil 3, sleeve 4's outside winding has second coil 5, the top surface of every curb plate 12 is equipped with two pads 6, first coil 3 and second coil 5 all include two and draw forth end 61, draw forth end 61 and pad 6 one-to-one welding.
The length of sleeve 4 is less than the distance between two curb plates 12, and curb plate 12 is provided with locating hole 42, and sleeve 4 tip is provided with reference column 41, and locating hole 42 and reference column 41 cooperate.
The number of the positioning holes 42 and the positioning columns 41 is greater than or equal to two.
The windings of the first coil 3 and the second coil 5 are both flat copper wires.
The thickness of the bottom plate 11 is 0.5-1 mm.
The magnetic core 2 is flat, and the magnetic core 2 and the bottom plate 11 are parallel to each other.
The first coil 3 and the second coil 5 are formed by single-layer winding, and the length of the first coil 3 and the length of the second coil are equal to the distance between the two side plates 12.
Specifically, please refer to fig. 1-2, the innermost portion of the common mode inductor is a flat bar-shaped magnetic core 2, a first coil 3 is wound outside the magnetic core 2, the flat magnetic core 2 increases the cross-sectional area of the magnetic core 2 by increasing the width, so that more windings can be wound on the magnetic core 2, the inductance of the common mode inductor is improved without increasing the overall height, a sleeve 4 is sleeved outside the first coil 3, the sleeve 4 is fixed with a positioning hole 42 of a side wall through a positioning column 41 connected at two ends, a second coil 5 is wound on the outer surface of the sleeve 4, the sleeve 4 has two functions, one is to isolate the two coils, thereby avoiding the problem of short circuit caused by the mutual contact of the two coils, and the other is to play a role in fixing and connecting, so as to enhance the stability of the internal structure of the inductor, and facilitate the winding.
The number of the positioning holes 42 and the positioning columns 41 is greater than or equal to two, so that the two ends of the sleeve 4 can be stably connected with the two side plates 12. First coil 3 and second coil 5 are the individual layer wire winding and constitute, and the length of first coil 3 and coil equals with the distance between two blocks of curb plates 12, and the magnetic core 2 is fully wound to the coil at utmost for the inductance value maximize of inductance.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. A slice type common mode inductor is characterized in that: including base (1), base (1) includes bottom plate (11), the both sides of bottom plate (11) all are connected with curb plate (12) perpendicularly, be provided with magnetic core (2) in base (1), the both ends of magnetic core (2) and curb plate (12) fixed connection of base (1) both sides, magnetic core (2) surface winding has first coil (3), sleeve (4) have been cup jointed in the outside of first coil (3), the outside winding of sleeve (4) has second coil (5), every the top surface of curb plate (12) is equipped with two places pad (6), first coil (3) and second coil (5) all include two and draw forth end (61), draw forth end (61) and pad (6) one-to-one welding.
2. The chip common-mode inductor according to claim 1, wherein: the length of the sleeve (4) is smaller than the distance between the two side plates (12), the side plates (12) are provided with positioning holes (42), the end portion of the sleeve (4) is provided with positioning columns (41), and the positioning holes (42) are matched with the positioning columns (41).
3. The chip common-mode inductor according to claim 2, wherein: the number of the positioning holes (42) and the positioning columns (41) is more than or equal to two.
4. The chip common-mode inductor according to claim 1, wherein: and the windings of the first coil (3) and the second coil (5) are flat copper wires.
5. The chip common-mode inductor according to claim 1, wherein: the thickness of the bottom plate (11) is 0.5-1 mm.
6. The chip common-mode inductor according to claim 1, wherein: the magnetic core (2) is flat, and the magnetic core (2) is parallel to the bottom plate (11).
7. The chip common-mode inductor according to claim 1, wherein: the first coil (3) and the second coil (5) are formed by single-layer winding, and the length of the first coil (3) and the length of the second coil (5) are equal to the distance between the two side plates (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480017.6U CN210429462U (en) | 2019-09-06 | 2019-09-06 | Chip common mode inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480017.6U CN210429462U (en) | 2019-09-06 | 2019-09-06 | Chip common mode inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210429462U true CN210429462U (en) | 2020-04-28 |
Family
ID=70366611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921480017.6U Expired - Fee Related CN210429462U (en) | 2019-09-06 | 2019-09-06 | Chip common mode inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210429462U (en) |
-
2019
- 2019-09-06 CN CN201921480017.6U patent/CN210429462U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 |