CN204010892U - A kind of common mode inductance - Google Patents
A kind of common mode inductance Download PDFInfo
- Publication number
- CN204010892U CN204010892U CN201420060870.3U CN201420060870U CN204010892U CN 204010892 U CN204010892 U CN 204010892U CN 201420060870 U CN201420060870 U CN 201420060870U CN 204010892 U CN204010892 U CN 204010892U
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- Prior art keywords
- magnet ring
- common mode
- mode inductance
- clamp
- ring clamp
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- 238000002955 isolation Methods 0.000 claims abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004804 winding Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
A common mode inductance, comprises magnet ring, is wrapped at least two group coils of mutually isolating on this magnet ring and is arranged on the magnet ring clamp on magnet ring; This magnet ring clamp isolation place between different coils.Common mode inductance of the present utility model has added a magnet ring clamp on original magnet ring, and this magnet ring clamp can come different inductance loop seclusions, makes it have enough creepage distances, guarantees the fail safe of circuit.Meanwhile, this magnet ring clamp can facilitate coil-winding, saves the time of coiling.Due to the material of magnet ring, magnet ring is made to other structures excessive to technological requirement, by this magnet ring clamp, can reduce the difficulty of its production technology.
Description
Technical field
The utility model relates to electronic component technology field, specifically a kind of common mode inductance.
Background technology
In circuit engineering, especially, in Switching Power Supply and converter technique, need to use common mode inductance to be used for filtering the electromagnetic interference signal of common mode, existence due to common-mode signal, circuit signal is easily had a negative impact, therefore need to suppress common-mode signal, improve circuit electrical characteristic.Common mode inductance is wound around two groups of coils conventionally on magnet ring, be connected respectively, thereby two groups of coilings must keep insulation and guarantee certain distance with live wire with zero line.According to the regulation in the safe > > GB4706.1-2005 of < < family expenses and similar applications electrical equipment, under basic insulation, have a minimum creep distance, the creepage distance of winding department should not be less than the numerical value of its regulation.
Existing common mode inductance coiling one end enamelled wire on magnet ring on market, its impedance is low, and inductance value is low, and does not take measures to guarantee that its creepage distance is less than the minimum creep distance of regulation.In addition, also have a kind of common mode inductance in magnet ring, to be provided with dividing plate, dividing plate is welded in magnet ring by rosin etc., complex operation, the welding such as rosin accidentally, can be bonded on coil, when the normal current in circuit is flowed through common mode inductance, cause electric current to produce reverse magnetic field in the inductance coil of same-phase coiling and can not cancel out each other, affecting the use of common mode inductance.Therefore, need a kind of new technical scheme to solve above-mentioned technical problem.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of common mode inductance is provided, and can guarantee isolation mutually between different coils, simultaneously convenient coiling again.
In order to achieve the above object, the utility model by the following technical solutions: a kind of common mode inductance, comprises magnet ring, be wrapped at least two group coils of mutually isolating on this magnet ring and be arranged on the magnet ring clamp on magnet ring; This magnet ring clamp isolation place between different coils.Than prior art, common mode inductance of the present utility model has added a magnet ring clamp on original magnet ring, and this magnet ring clamp can come different inductance loop seclusions, makes it have enough creepage distances, guarantees the fail safe of circuit.Meanwhile, this magnet ring clamp can facilitate coil-winding, saves the time of coiling.Due to the material of magnet ring, magnet ring is made to other structures excessive to technological requirement, by this magnet ring clamp, can reduce the difficulty of its production technology.
Further, the section of described magnet ring clamp is " Π " shape, the direction of its opening part along the outer shroud of magnet ring to interior ring be plugged on magnet ring and with magnet ring interference fit.Facilitate magnet ring clamp to be arranged on magnet ring.
Further, the section of described magnet ring clamp is " Π " shape, its opening part with the direction perpendicular to magnet ring place plane, be plugged on magnet ring and with magnet ring interference fit.Facilitate magnet ring clamp to be arranged on magnet ring.
Further, described magnet ring clamp be take two as one group of both sides, front and back that are arranged on symmetrically same isolation place.Due to the variable thickness of magnet ring, magnet ring clamp is separately positioned on to the insulation distance that its both sides, front and back can guarantee two coils, saved the material of making magnet ring clamp.
Further, described magnet ring clamp has two groups, take the center of magnet ring to be separately positioned on the two ends of magnet ring as symmetric points.This structure is applicable to the common mode inductance of two groups of coils.
Further, the end face of described magnet ring clamp towards the center of magnet ring is provided with a draw-in groove; Also comprise a baffle plate, this baffle plate is inserted between the draw-in groove of two groups of magnet ring clamps, and magnet ring inner ring is separated into two parts.By this baffle plate, two groups of coils are further isolated, improve impedance and the inductance value of common mode inductance.
Further, described magnet ring clamp has three groups, take the center of magnet ring to be equally spaced arranged on magnet ring as symmetric points.This structure is applicable to the common mode inductance of three groups of coils.
Further, the end face of described magnet ring clamp towards the center of magnet ring is provided with a draw-in groove; Also comprise the spacer body that a cross section is " Y " shape, this spacer body is inserted between the draw-in groove of three groups of magnet ring clamps, and magnet ring inner ring is separated into three parts.By this spacer body, two groups of coils are further isolated, improve impedance and the inductance value of common mode inductance.
Further, also comprise a base plate, base plate is provided with perforation; This magnet ring is arranged on this base plate, and the termination of coil is through the perforation on base plate.
Further, this base plate is fixed on magnet ring circumference side.
Accompanying drawing explanation
Fig. 1 be a kind of common mode inductance of the present utility model embodiment mono-face structural representation
Fig. 2 is the end view of the common mode inductance of Fig. 1
Fig. 3 is the stereogram of the magnet ring clamp 2 in Fig. 1
Fig. 4 be a kind of common mode inductance of the present utility model embodiment bis-face structural representation
Fig. 5 is the structural representation of the magnet ring clamp in variant embodiment of the present utility model
Referring to drawings and the specific embodiments, the utility model is described in further detail.
Embodiment
embodiment mono-:
Refer to Fig. 1, Fig. 2 and Fig. 3, wherein, Fig. 1 be a kind of common mode inductance of the present utility model embodiment mono-face structural representation, the end view of the common mode inductance that Fig. 2 is Fig. 1, Fig. 3 is the stereogram of the magnet ring clamp 2 in Fig. 1.A common mode inductance, comprises magnet ring 1, magnet ring clamp 2, coil 3, baffle plate 4.Described magnet ring clamp 2 has two groups, take the center of magnet ring 1 to be separately positioned on the two ends of magnet ring 1 as symmetric points, thereby magnet ring 1 is separated into two sections.In the present embodiment, described coil 3 is two groups, is wrapped on this magnet ring 1 and by these two groups of magnet ring clamps 2 and mutually isolates.
Described magnet ring clamp 2 be take two as one group of both sides, front and back that are arranged on symmetrically same isolation place.The section of described magnet ring clamp 2 is " Π " shape, its opening part perpendicular to the direction at magnet ring place, be plugged on magnet ring 1 and with magnet ring 1 interference fit.The end face of described magnet ring clamp 2 towards the center of magnet ring 1 is provided with a draw-in groove 21.
Described baffle plate 4 is inserted between the draw-in groove 21 of two groups of magnet ring clamps 2, and magnet ring 1 inner ring is separated into two parts.
embodiment bis-:
Refer to Fig. 4, its be a kind of common mode inductance of the present utility model embodiment bis-face structural representation.A common mode inductance, comprises magnet ring 1, magnet ring clamp 2, coil 3 and spacer body 5.Described magnet ring clamp 2 has three groups, take the center of magnet ring 1 to be equally spaced arranged on magnet ring 1 as symmetric points, thereby magnet ring 1 is separated into three sections.In the present embodiment, described coil 3 has three groups, is wrapped on this magnet ring 1 and by these three groups of magnet ring clamps 2 and mutually isolates.
Described magnet ring clamp 2 be take two as one group of both sides, front and back that are arranged on symmetrically same isolation place.The section of described magnet ring clamp 2 is " Π " shape, its opening part be plugged on magnet ring 1 and with magnet ring 1 interference fit.The end face of described magnet ring clamp 2 towards the center of magnet ring 1 is provided with a draw-in groove 21.
The cross section of described spacer body 5 is " Y " shape, and it is inserted between the draw-in groove 21 of two groups of magnet ring clamps 2, and magnet ring 1 inner ring is separated into three parts.
As the further improvement of above embodiment, common mode inductance of the present utility model also can comprise a base plate, and base plate is provided with perforation; This base plate is fixed on magnet ring 1 circumference side, and the termination of coil is through the perforation on base plate.
As variant embodiment of the present utility model, magnet ring clamp 2 can the direction along the outer shroud of magnet ring 1 to interior ring be plugged on magnet ring 1, and formed draw-in groove 21 is in the bottom of its bipod, as shown in Figure 5.All the other structures are consistent with the above embodiments, repeat no more.
Than prior art, common mode inductance of the present utility model has added a magnet ring clamp on original magnet ring, and this magnet ring clamp can come different inductance loop seclusions, makes it have enough creepage distances, guarantees the fail safe of circuit.Meanwhile, this magnet ring clamp can facilitate coil-winding, saves the time of coiling.Due to the material of magnet ring, magnet ring is made to other structures excessive to technological requirement, by this magnet ring clamp, can reduce the difficulty of its production technology, magnet ring clamp can be produced in a large number, is applicable to the magnet ring of different-thickness.Further also by baffle plate, two groups of coils are further isolated, improve impedance and the inductance value of common mode inductance.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection range of the present utility model should be as the criterion with claim limited range.For those skilled in the art, within not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (8)
1. a common mode inductance, is characterized in that: comprise magnet ring, be wrapped at least two group coils of mutually isolating on this magnet ring and be arranged on the magnet ring clamp on magnet ring; Described magnet ring clamp is arranged on isolation place between different coils; The section of described magnet ring clamp is " Π " shape, the direction of its opening part along the outer shroud of magnet ring to interior ring be plugged on magnet ring and with magnet ring interference fit, or its opening part is plugged on magnet ring with the direction perpendicular to magnet ring place plane and with magnet ring interference fit.
2. a kind of common mode inductance according to claim 1, is characterized in that: described magnet ring clamp be take two as one group of both sides, front and back that are arranged on symmetrically same isolation place.
3. a kind of common mode inductance according to claim 2, is characterized in that: described magnet ring clamp has two groups, take the center of magnet ring to be separately positioned on the two ends of magnet ring as symmetric points.
4. a kind of common mode inductance according to claim 3, is characterized in that: the end face of described magnet ring clamp towards the center of magnet ring is provided with a draw-in groove; Also comprise a baffle plate, this baffle plate is inserted between the draw-in groove of two groups of magnet ring clamps, and magnet ring inner ring is separated into two parts.
5. a kind of common mode inductance according to claim 3, is characterized in that: described magnet ring clamp has three groups, take the center of magnet ring to be equally spaced arranged on magnet ring as symmetric points.
6. a kind of common mode inductance according to claim 5, is characterized in that: the end face of described magnet ring clamp towards the center of magnet ring is provided with a draw-in groove; Also comprise the spacer body that a cross section is " Y " shape, this spacer body is inserted between the draw-in groove of three groups of magnet ring clamps, and magnet ring inner ring is separated into three parts.
7. a kind of common mode inductance according to claim 6, is characterized in that: also comprise a base plate, base plate is provided with perforation; This magnet ring is arranged on this base plate, and the termination of coil is through the perforation on base plate.
8. a kind of common mode inductance according to claim 7, is characterized in that: this base plate is fixed on magnet ring circumference side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420060870.3U CN204010892U (en) | 2014-02-10 | 2014-02-10 | A kind of common mode inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420060870.3U CN204010892U (en) | 2014-02-10 | 2014-02-10 | A kind of common mode inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204010892U true CN204010892U (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420060870.3U Expired - Lifetime CN204010892U (en) | 2014-02-10 | 2014-02-10 | A kind of common mode inductance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204010892U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376969A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode inductor |
| CN105513767A (en) * | 2016-01-26 | 2016-04-20 | 中国振华集团云科电子有限公司 | Common mode inductor resistant to high breakdown voltage and stable in performance |
-
2014
- 2014-02-10 CN CN201420060870.3U patent/CN204010892U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376969A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode inductor |
| CN105513767A (en) * | 2016-01-26 | 2016-04-20 | 中国振华集团云科电子有限公司 | Common mode inductor resistant to high breakdown voltage and stable in performance |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |
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| CX01 | Expiry of patent term |