CN207302830U - A kind of anti-short-circuit common mode inductance - Google Patents
A kind of anti-short-circuit common mode inductance Download PDFInfo
- Publication number
- CN207302830U CN207302830U CN201721065315.XU CN201721065315U CN207302830U CN 207302830 U CN207302830 U CN 207302830U CN 201721065315 U CN201721065315 U CN 201721065315U CN 207302830 U CN207302830 U CN 207302830U
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- magnetic core
- base
- upper cover
- binding post
- common mode
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Abstract
The utility model discloses a kind of anti-short-circuit common mode inductance, including upper cover, base, first magnetic core and the second magnetic core, base is U-shaped structure, upper cover is connected to above base, first magnetic core and the second magnetic core are vertically mounted in base, it is close at the top of first magnetic core and the second magnetic core on the inside of upper cover, upper outer side of lid is equipped with upper binding post, lower binding post is set on base outer wall, wire casing is provided with first magnetic core and the second magnetic core outer wall, and coiling winding in wire casing, winding one end is electrically connected upper binding post, the other end is electrically connected lower binding post, the inside of base and the inner wall of upper cover are respectively provided with shielding piece, the utility model structural principle is simple, using opening up wire casing on magnetic core, coiling winding in wire casing, it can effectively prevent overtension and puncture, so as to cause electrical short-circuit；In addition, also there is excellent electro-magnetic screen function.
Description
Technical field
Common mode inductance technical field is the utility model is related to, is specially a kind of anti-short-circuit common mode inductance.
Background technology
Common mode inductance, is also common mode choke, is usually used in filtering the electromagnetic interference signal of common mode in the Switching Power Supply of computer.
In board design, common mode inductance is also to play EMI filtering, for suppressing the electromagnetic wave outside spoke of HW High Way generation
Penetrate transmitting.Two coils are wound on same iron core in common mode inductance, and the number of turn and phase are all identical (coiling is reverse).In this way, when electricity
When normal current in road flows through common mode inductance, electric current produces reverse magnetic field and mutual in the inductance coil of same-phase coiling
Offset, normal signal electric current is mainly influenced (and damping caused by leakage inductance on a small quantity) by coil resistance at this time；Work as coil midstream
When crossing the electric current of common mode interference, magnetic field in the same direction can be produced in coil and increases the induction reactance of coil, coil is shown as height
Impedance, produces stronger damping, with this attenuation common-mode electric current, achievees the purpose that filtering.
Common mode inductance of the prior art is usually directly by coil winding on wrapping post, once being subject to high pressure, is held
Easily breakdown, causes exterior electrical short-circuit, in addition, effectiveness is poor, influences using effect.
Utility model content
It is proposed in the above background technology to solve the purpose of this utility model is to provide a kind of anti-short-circuit common mode inductance
Problem.
To achieve the above object, the utility model provides following technical solution：A kind of anti-short-circuit common mode inductance, including it is upper
Lid, base, the first magnetic core and the second magnetic core, the base are U-shaped structure, and the upper cover is connected to above base, described the
One magnetic core and the second magnetic core are vertically mounted in base, are close at the top of first magnetic core and the second magnetic core on the inside of upper cover,
The upper outer side of lid is equipped with upper binding post, sets lower binding post on the base outer wall, outside first magnetic core and the second magnetic core
Wire casing, and coiling winding in the wire casing are provided with wall, described winding one end is electrically connected upper binding post, and the other end electrically connects
Lower binding post is connect, the inside of the base and the inner wall of upper cover are respectively provided with shielding piece.
Preferably, it is described shielding piece include be disposed adjacent successively heat-insulating, fire-preventing film layer, attachment mucigel, metallic shield
Layer, metal mucigel；The metal screen layer is metal mesh structure；The metal mucigel is epoxy resin viscose.
Preferably, first magnetic core and the second magnetic core are made of amorphous, nickel-zinc ferrite and manganese-zinc ferrite.
Preferably, protrusion is respectively equipped with the inside of the upper cover both ends, the base top both sides are set and raised phase respectively
The groove of clamping.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model structural principle is simple, using opening up wire casing on magnetic core, coiling winding in wire casing, and Neng Gouyou
Effect prevents overtension and punctures, so as to cause electrical short-circuit.
(2) in the utility model, the shielding piece of use has the advantages that heat-insulated, fire prevention, heat safe, in addition, with excellent
Electro-magnetic screen function, can effectively prevent external electromagnetic effect of signals inductance work efficiency.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 shields piece sectional view for the utility model.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of anti-short-circuit common mode inductance, including upper cover 1,
Base 2, the first magnetic core 3 and the second magnetic core 4, the base 2 are U-shaped structure, and the upper cover 1 is connected to the top of base 2, upper cover
Protrusion 14 is respectively equipped with the inside of 1 both ends, the 2 top both sides of base set the groove 15 with raised 14 phases clamping respectively；It is described
First magnetic core 3 and the second magnetic core 4 are vertically mounted in base 2, and the top of 3 and second magnetic core 4 of the first magnetic core is close to
The inner side of lid 1, the outside of upper cover 1 are equipped with upper binding post 5, and lower binding post 6, first magnetic core 3 are set on 2 outer wall of base
Be provided with wire casing 7, and coiling winding 8 in the wire casing 7 on 4 outer wall of the second magnetic core, described 8 one end of winding is electrically connected and connects
Terminal 5, the other end are electrically connected lower binding post 6, and the inside of the base 2 and the inner wall of upper cover 1 are respectively provided with shielding piece 9.
In the utility model, shielding piece 9 include be disposed adjacent successively heat-insulating, fire-preventing film layer 10, attachment mucigel 11,
Metal screen layer 12, metal mucigel 13；The metal screen layer 12 is metal mesh structure；The metal mucigel 13 is epoxy
Resin viscose.Metal mesh is using copper mesh is silver-plated or magnesium alloy net has a relatively good shield effectiveness, and copper mesh is silver-plated and magnalium
Alloy, which is compared, has stronger antioxygenic property；Heat-insulating, fire-preventing film layer is bismuth oxide coating, for preventing in high temperature shape
Metal mesh damages and loses the function of shielded signal under state.In the utility model, the shielding piece of use has heat-insulated, fire prevention, resistance to
The advantages of high temperature, in addition, with excellent electro-magnetic screen function, can effectively prevent external electromagnetic effect of signals inductance from working
Efficiency.
In addition, in the utility model, the first magnetic core 3 and the second magnetic core 4 use amorphous, nickel-zinc ferrite and manganese-zinc ferrite
System into；It has the characteristics that high frequency, wideband, high impedance, low-loss.It can be used in 10kHz to 300MHz frequency ranges.
The utility model structural principle is simple, and using wire casing is opened up on magnetic core, coiling winding in wire casing can be effective
Prevent overtension and puncture, so as to cause electrical short-circuit.
While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from the principle of the utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of anti-short-circuit common mode inductance, including upper cover (1), base (2), the first magnetic core (3) and the second magnetic core (4), its feature
It is：The base (2) is U-shaped structure, and the upper cover (1) is connected to above base (2), first magnetic core (3) and the
Two magnetic cores (4) are vertically mounted in base (2), are close to upper cover (1) at the top of first magnetic core (3) and the second magnetic core (4)
Inner side, is equipped with upper binding post (5) on the outside of the upper cover (1), sets time binding post (6) on base (2) outer wall, and described first
Wire casing (7), and the interior coiling winding (8) of the wire casing (7), the winding are provided with magnetic core (3) and the second magnetic core (4) outer wall
(8) one end is electrically connected upper binding post (5), and the other end is electrically connected lower binding post (6), the inside of the base (2) and upper cover
(1) inner wall is respectively provided with shielding piece (9).
2. the anti-short-circuit common mode inductance of one kind according to claim 1, it is characterised in that：The shielding piece (9) is included successively
The heat-insulating, fire-preventing film layer (10) that is disposed adjacent, attachment mucigel (11), metal screen layer (12), metal mucigel (13)；Institute
It is metal mesh structure to state metal screen layer (12)；The metal mucigel (13) is epoxy resin viscose.
3. the anti-short-circuit common mode inductance of one kind according to claim 1, it is characterised in that：First magnetic core (3) and second
Magnetic core (4) is made of amorphous, nickel-zinc ferrite and manganese-zinc ferrite.
4. the anti-short-circuit common mode inductance of one kind according to claim 1, it is characterised in that：Divide on the inside of upper cover (1) both ends
Not She You raised (14), both sides set the groove (15) being mutually clamped with protrusion (14) respectively at the top of the base (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721065315.XU CN207302830U (en) | 2017-08-24 | 2017-08-24 | A kind of anti-short-circuit common mode inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721065315.XU CN207302830U (en) | 2017-08-24 | 2017-08-24 | A kind of anti-short-circuit common mode inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207302830U true CN207302830U (en) | 2018-05-01 |
Family
ID=62437414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721065315.XU Expired - Fee Related CN207302830U (en) | 2017-08-24 | 2017-08-24 | A kind of anti-short-circuit common mode inductance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207302830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115534443A (en) * | 2022-10-08 | 2022-12-30 | 苏州盛达飞智能科技股份有限公司 | Electromagnetic shielding material for hard package |
-
2017
- 2017-08-24 CN CN201721065315.XU patent/CN207302830U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115534443A (en) * | 2022-10-08 | 2022-12-30 | 苏州盛达飞智能科技股份有限公司 | Electromagnetic shielding material for hard package |
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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: 20180501 Termination date: 20200824 |