CN204463976U - Common-mode filter - Google Patents
Common-mode filter Download PDFInfo
- Publication number
- CN204463976U CN204463976U CN201420647482.5U CN201420647482U CN204463976U CN 204463976 U CN204463976 U CN 204463976U CN 201420647482 U CN201420647482 U CN 201420647482U CN 204463976 U CN204463976 U CN 204463976U
- Authority
- CN
- China
- Prior art keywords
- boss
- enamelled wire
- common
- mode filter
- electrode terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Coils Or Transformers For Communication (AREA)
Abstract
The utility model openly provides a kind of common-mode filter, it enamelled wire comprising magnetic core and be directly wrapped on magnetic core, described magnetic core comprises centerbody and is positioned at the first flange portion and second flange portion at centerbody two ends, it is characterized in that: described centerbody is provided with at least one boss, described enamelled wire is from the side of boss around to the opposite side of boss, described enamelled wire is supported in boss around to during boss place, the arrangement of described enamelled wire comprises tight portion and sparse portion, described tight portion is positioned at the both sides of boss, and described sparse portion is positioned at boss place.
Description
[technical field]
The utility model relates to a kind of core structure of common-mode filter.
[background technology]
The prior art relevant to the utility model, consult the US publication that publication number is US20140097928, the patent discloses that a kind of common-mode filter, it enamelled wire comprising an I-type magnetic core and be wrapped on magnetic core, the described enamelled wire part be wrapped on magnetic core comprises tight portion and the sparse portion between two tight portions, the electromagnetic performance that such design improves product reaches particular value, but the enamelled wire in the tight portion of such design easily slides to sparse portion, thus causing product electromagnetic performance to reduce, high-frequency signal is unstable.
As previously mentioned, in the urgent need to providing a kind of new common-mode filter to improve such problem.
[utility model content]
The technical problems to be solved in the utility model is the common-mode filter providing a kind of stable enamelled wire density to arrange.
For solving the problems of the technologies described above, a kind of technical scheme that the utility model provides is: a kind of common-mode filter, it enamelled wire comprising magnetic core and be directly wrapped on magnetic core, described magnetic core comprises centerbody and is positioned at the first flange portion and second flange portion at centerbody two ends, described centerbody is provided with at least one boss, described enamelled wire is from the side of boss around to the opposite side of boss, described enamelled wire is supported in boss around to during boss place, the arrangement of described enamelled wire comprises tight portion and sparse portion, described tight portion is positioned at the both sides of boss, described sparse portion is positioned at boss place.
Compared with prior art, magnetic core of the present utility model being arranged boss both can when coiling as the strong point, stablely again enamelled wire was wrapped in tight portion on magnetic core and sparse portion separately.
[accompanying drawing explanation]
Fig. 1 is the stereogram of the utility model common-mode filter.
Fig. 2 is the stereogram of another angle of the common-mode filter of the utility model shown in Fig. 1.
Fig. 3 is the exploded view of the utility model common-mode filter.
[embodiment]
Please refer to shown in Fig. 1 to Fig. 3, meet a kind of common-mode filter 100 of the present utility model, it enamelled wire 20 comprising one " work " shaped magnetic core 10 and be directly wrapped on magnetic core 10, this magnetic core 10 described is Ni-Zn material, therefore above enamelled wire 20 can directly be wrapped in.The first flange portion 12, second flange portion 13 that described magnetic core 10 comprises centerbody 11 and is positioned at centerbody 11 two ends and the some boss 14 be arranged on centerbody, the present embodiment devises two pairs of boss 14, but can arrange some to boss 14 time according to circumstances different.
Described centerbody 11 is provided with the first side 110 and second side 111 contrary with the first side 110 that are positioned at first, second flange portion 12,13 the same side, and first, second side 110,111 described is respectively equipped with pair of projections 14.Described the present embodiment boss 14 is triangle, is oppositely arranged in each one of them angle leg-of-mutton, and a leg-of-mutton hypotenuse is relative and parallel with another leg-of-mutton hypotenuse.Described enamelled wire 20 comprises the first enamelled wire 21 and the second enamelled wire 22, and described first enamelled wire 21 is primary coil, and the second enamelled wire 22 is secondary coil.First, second enamelled wire 21,22 described is wrapped on centerbody 11 simultaneously and a circle is close to a circle around to boss 14 place, again around to the first side 110 two boss 14 between, continue to be wound around from the side of a boss 14 around to the opposite side of another boss 14, the enamelled wire 20 be wrapped in like this on centerbody 11 defines tight portion 201 and sparse portion 202, described tight portion 201 is positioned at the both sides of boss 14, and described sparse portion 202 is between tight portion 201 and be positioned at boss 14 place.Such for enamelled wire 20 density arrangement is improved the electromagnetic performance of product, high frequency inserts echo-signal and stablizes, thus reaches the particular value of needs.The design of boss 14 then stabilizes the general layout of this density arrangement, makes enamelled wire 20 be not easy urgent compact part 201 and slides to sparse portion 202, and also as a strong point while coiling, facilitate coiling.Described tight portion 201 width being positioned at both sides, sparse portion 202 is equal, and such high-frequency signal is more stable.Described first flange portion 12 is provided with the first electrode terminal 120 and the second electrode terminal 121, and described second flange portion 13 is provided with third electrode terminal 130 and the 4th electrode terminal 131.One end of described first enamelled wire 21 is connected with the first electrode terminal 120, and the other end is connected with the 4th electrode terminal 131.One end of described second enamelled wire 22 is connected with the second electrode terminal 121, and the other end is connected with third electrode terminal 130.Groove 15 is provided with between two electrode terminals of described same flange portion.Described when enamelled wire 20 is wound around, from the 3rd, the 4th electrode terminal 130,131 toward first, second electrode terminal direction, first, second enamelled wire is wound around along clockwise direction.
Claims (9)
1. a common-mode filter, it enamelled wire comprising magnetic core and be directly wrapped on magnetic core, described magnetic core comprises centerbody and is positioned at the first flange portion and second flange portion at centerbody two ends, it is characterized in that: described centerbody is provided with at least one boss, described enamelled wire is from the side of boss around to the opposite side of boss, described enamelled wire is supported in boss around to during boss place, the arrangement of described enamelled wire comprises tight portion and sparse portion, described tight portion is positioned at the both sides of boss, and described sparse portion is positioned at boss place.
2. common-mode filter as claimed in claim 1, is characterized in that: described boss is provided with a pair and interval is arranged, and walks around between described enamelled wire to two boss.
3. common-mode filter as claimed in claim 1, is characterized in that: described centerbody comprises the first side and second side contrary with the first side, and described boss is located on the first side and the second side respectively.
4. common-mode filter as claimed in claim 2, it is characterized in that: described pair of projections is triangle, be oppositely arranged in each leg-of-mutton angle, a leg-of-mutton hypotenuse is relative and parallel with another leg-of-mutton hypotenuse.
5. common-mode filter as claimed in claim 1, is characterized in that: described in be positioned at the tight portion width of boss both sides consistent.
6. common-mode filter as claimed in claim 1, is characterized in that: described enamelled wire comprises the first enamelled wire and the second enamelled wire, and first, second enamelled wire is wrapped on centerbody simultaneously and a circle is close to a circle around to boss place.
7. common-mode filter as claimed in claim 6, it is characterized in that: described first flange portion is provided with the first electrode terminal and the second electrode terminal, described second flange portion is provided with third electrode terminal and the 4th electrode terminal, one end of described first enamelled wire is connected with the first electrode terminal, the other end is connected with the 4th electrode terminal, one end of described second enamelled wire is connected with the second electrode terminal, and the other end is connected with third electrode terminal.
8. common-mode filter as claimed in claim 7, is characterized in that: be provided with groove between two electrode terminals of described same flange portion.
9. common-mode filter as claimed in claim 6, it is characterized in that: described first enamelled wire is primary coil, described second enamelled wire is secondary coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647482.5U CN204463976U (en) | 2014-11-03 | 2014-11-03 | Common-mode filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647482.5U CN204463976U (en) | 2014-11-03 | 2014-11-03 | Common-mode filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204463976U true CN204463976U (en) | 2015-07-08 |
Family
ID=53670827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420647482.5U Expired - Fee Related CN204463976U (en) | 2014-11-03 | 2014-11-03 | Common-mode filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204463976U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039152A (en) * | 2015-12-15 | 2017-08-11 | 株式会社村田制作所 | Common mode choke coil |
| CN107195437A (en) * | 2017-06-13 | 2017-09-22 | 深圳市诺威实业有限公司 | Chip type two-wire EMI common-mode inductors |
| CN109243778A (en) * | 2017-07-11 | 2019-01-18 | Tdk株式会社 | coil device |
| CN109935448A (en) * | 2017-12-18 | 2019-06-25 | Tdk株式会社 | Coil device |
-
2014
- 2014-11-03 CN CN201420647482.5U patent/CN204463976U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039152A (en) * | 2015-12-15 | 2017-08-11 | 株式会社村田制作所 | Common mode choke coil |
| CN107039152B (en) * | 2015-12-15 | 2019-06-11 | 株式会社村田制作所 | Common mode choke coil |
| CN107195437A (en) * | 2017-06-13 | 2017-09-22 | 深圳市诺威实业有限公司 | Chip type two-wire EMI common-mode inductors |
| CN109243778A (en) * | 2017-07-11 | 2019-01-18 | Tdk株式会社 | coil device |
| US11164692B2 (en) | 2017-07-11 | 2021-11-02 | Tdk Corporation | Coil device |
| US11935679B2 (en) | 2017-07-11 | 2024-03-19 | Tdk Corporation | Coil device |
| CN109935448A (en) * | 2017-12-18 | 2019-06-25 | Tdk株式会社 | Coil device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20151103 |
|
| EXPY | Termination of patent right or utility model |