CN202549540U - Electromagnetic-interference-eliminable magnetic element - Google Patents
Electromagnetic-interference-eliminable magnetic element Download PDFInfo
- Publication number
- CN202549540U CN202549540U CN2012201770096U CN201220177009U CN202549540U CN 202549540 U CN202549540 U CN 202549540U CN 2012201770096 U CN2012201770096 U CN 2012201770096U CN 201220177009 U CN201220177009 U CN 201220177009U CN 202549540 U CN202549540 U CN 202549540U
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- magnetic element
- pcb
- circuit board
- printed circuit
- electromagnetic interference
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Abstract
The utility model relates to an electromagnetic-interference-eliminable magnetic element which is arranged on a printed circuit board (PCB). The magnetic element consists of two iron cores, a winding tube and a winding, wherein the winding tube is provided with a hollow shaft tube, and the winding is wound on the surface of the winding tube. A core post extends out of each iron core towards the hollow shaft tube of the winding tube, and the core posts are inserted into the hollow shaft tube so as to connect the iron cores with the winding tube; the two sides of the winding tube are provided with a plurality of pins, so that the magnetic element can be welded to the PCB; and in addition, the iron cores are electrically connected with pins which are connected with quasi-level end points through conductive adhesives, and then, electromagnetic interference generated by the magnetic element can be in electrical connection with the quasi-level end points of the PCB through the conductive adhesives, so that the electric potential of the iron cores can be stable, thereby offsetting the electromagnetic interference.
Description
Technical field
The utility model is meant a kind of magnetic element that on the printed circuit board (PCB), also can eliminate electromagnetic interference that is arranged at especially about a kind of magnetic element of eliminating electromagnetic interference.
Background technology
The general magnetic element of being known 1 is shown in Figure 1A and Figure 1B; Form by two iron cores 11, a bobbin 12 and 13 of coilings; Wherein wind the line 13 being set around on bobbin 12 surfaces, and shown in Figure 1B, can be again two iron cores 11 be up and down inserted these bobbins 12; Linking, to form a complete magnetic element 1 with this bobbin 12; These bobbin 12 both sides have several pins 121 in addition, and therefore as shown in Figure 2, this magnetic element 1 is plugged on the printed circuit board (PCB) 2 by pin 121;
And along with the progress of high-tech area; Electromagnetic interference (electromagnetic inference; EMI) problem is also increasing; Therefore be inserted in 2 last times of this printed circuit board (PCB) when above-mentioned magnetic element 1, this magnetic element 1 will produce galvanomagnetic effect, and element is on every side caused electromagnetic interference; Therefore; Manufacturer is arranged in order to solve the above problems; So twine one deck Copper Foil 14 (as shown in Figure 2, as can again this magnetic element 1 to be plugged on this printed circuit board (PCB) 2) in complete magnetic element 1 surface with behind iron core 11 surface winding one deck Copper Foils 14; So that EMI shielded effect; Simultaneously further a connecting line 3 one ends are welded in Copper Foil 14 surfaces, the other end then is welded on the accurate position end points 21 (ground termination points, positive voltage end points or negative voltage end points) of printed circuit board (PCB) 2, to solve the electromagnetic interference that magnetic element 1 is produced.
But above-mentioned solution except twining one deck Copper Foil 14, more needs the extra connecting line 3 that connects again, can reach the purpose that solves electromagnetic interference; So when making magnetic element, behind necessary extra winding one deck Copper Foil 14, more need again connecting line 3 is welded on the Copper Foil 14; Therefore will cause extra manufacturing cost,, also be easy to generate other bad influence and interference if connecting line 3 is long in addition; Because connecting line 3 one ends will be welded on the Copper Foil 14; The other end then will be welded on the printed circuit board (PCB) 2, and when using magnetic element 1, also often must connecting line 3 other ends be welded on the printed circuit board (PCB) 2; Therefore connecting line 3 tends to inclined to one side length (also therefore having caused connecting line 3 can produce bending or crooked), to avoid connecting line 3 length inadequately to be welded on the printed circuit board (PCB) 2.
Therefore,, and do not need the extra soldered connecting line,, so should be a best solution to reduce manufacturing cost and to reduce unnecessary material cost if this magnetic element and printed circuit board (PCB) can be electrically connected.
The utility model content
The utility model promptly is to provide a kind of magnetic element of eliminating electromagnetic interference; Between iron core and arbitrary pin, use conducting resinl to reach the purpose of electric connection; And this arbitrary pin produces electric connection with accurate position end points; Therefore can electrically connect through the accurate position end points generation of conducting resinl and printed circuit board (PCB), so that the iron core current potential is stable, to offset the problem of electromagnetic interference.
Can reach the magnetic element of the electromagnetic interference eliminated of above-mentioned novel purpose; Be arranged on the printed circuit board (PCB); The bobbin and one that this magnetic element has a hollow axle tube by two iron cores, is set around the coiling on bobbin surface and forms; Wherein this iron core extends a stem stem towards the hollow axle tube of this bobbin, and this stem stem is inserted this hollow axle tube so that this iron core and this bobbin link;
And these bobbin both sides have several pins; With so that this magnetic element can be welded on this printed circuit board (PCB); And electrically connect by a conducting resinl between this iron core and at least one pin that is being connected accurate position end points; In order to the electromagnetic interference that magnetic element produced, can connect the formed loop of pin of accurate position end points through this conducting resinl and this, the electromagnetic interference that magnetic element produced is conducted on the accurate position end points of printed circuit board (PCB).
In particular, the shape of said stem stem can match in the hollow axle tube of this bobbin.
In particular, said hollow axle tube offers an opening towards stem stem, so that this stem stem can be inserted in this hollow axle tube by opening.
In particular, a said accurate end points is earth terminal, positive voltage terminal or negative voltage side.
In particular, direct smooth being welded on the printed circuit board surface of said magnetic element.
In particular, the pin of said magnetic element runs through printed circuit board (PCB), and is welded in the back side of printed circuit board (PCB).
The magnetic element of the utility model; With conducting resinl iron core is connected accurate position end points with one of magnetic element pin is connected; Accurate position end points on iron core and the printed circuit board (PCB) is electrically connected; This magnetic element and printed circuit board (PCB) can be electrically connected, and do not need the extra soldered connecting line, to reduce manufacturing cost and to reduce unnecessary material cost.
Description of drawings
Figure 1A is the decomposition texture sketch map of existing magnetic element;
Figure 1B is the combining structure sketch map of existing magnetic element;
Fig. 2 is the application sketch map of existing magnetic element;
Fig. 3 A is the three-dimensional decomposition texture sketch map of the utility model magnetic element that can eliminate electromagnetic interference;
Fig. 3 B is the three-dimensional sketch map of the utility model magnetic element that can eliminate electromagnetic interference;
Fig. 4 can eliminate the front view of the magnetic element of electromagnetic interference for the utility model; And
Fig. 5 can eliminate the enforcement sketch map of the magnetic element of electromagnetic interference for the utility model.
[main element symbol description]
1, magnetic element 11, iron core 12, bobbin
121, pin 13, coiling 14, Copper Foil
2, printed circuit board (PCB) 21, accurate position end points 3, connecting line
4, magnetic element 41, iron core 411, stem stem
42, bobbin 421, hollow axle tube 4211, opening
422, pin 43, coiling 44, gluing conducting region
5, conducting resinl 6, printed circuit board (PCB) 61, accurate position end points.
Embodiment
Relevant for the aforementioned of the utility model and other technology contents, characteristics and effect, in the detailed description of following cooperation, can clearly appear with reference to the preferred embodiment of accompanying drawing.
See also Fig. 3 A and Fig. 3 B; Can eliminate the three-dimensional decomposition texture sketch map and the three-dimensional sketch map of the magnetic element of electromagnetic interference for the utility model; By knowing among the figure; The bobbin 42 and one that this magnetic element 4 has a hollow axle tube 421 by two iron cores 41, is set around 43 of the coilings on bobbin 42 surfaces to be formed, and wherein this iron core 41 extends a stem stem 411 towards the hollow axle tube 421 of this bobbin 42, shown in Fig. 3 A; This coiling 43 has been set around bobbin 42 surfaces, and upward (vertical section of this bobbin 42 is an I-shaped structure; Wind the line 43 then is to be around on the wall of I-shaped both sides indent), and the shape of the stem stem 411 of two iron cores 41 can match in the hollow axle tube 421 of this bobbin 42, and this hollow axle tube 421 offers an opening 4211 towards stem stem 411; Therefore two iron cores 411 can insert this opening 4211 (bobbin 42 also has two openings 4211 with respect to this iron core 411 up and down) up and down; This stem stem 411 then can be got in this hollow axle tube 421 by opening 4211, and shown in Fig. 3 B, 41 of this iron cores and this bobbin 42 link.
And has a gluing conducting region 44 between the pin 422 of this iron core 41 and this magnetic element 4; Therefore can conducting resinl 5 be drenched on this gluing conducting region 44; When conducting resinl 5 drenches on this gluing conducting region 44 and after solidifying; As shown in Figure 4,5 gluings of conducting resinl are (because this conducting resinl 5 has conductive characteristic, so conducting resinl 5 can make iron core 41 and pin 422 form electric connection) on iron core 41 and pin 422; Form unnecessary gluing for fear of iron core 41 and the pin with certain function 422 in addition, so can the pin 422 that iron core 41 and any one need not done particular job be carried out gluing.
In addition, (form of its welding has two kinds, and first kind of magnetic element 4 can be with direct smooth being welded on printed circuit board (PCB) 6 surfaces of surface mount technology (SMD) when this magnetic element 4 is welded in a printed circuit board (PCB) 6; And the pin 422 of second kind of magnetic element 4 inserts the through hole of this printed circuit board surface 6; And pin 422 is welded in the back side of printed circuit board (PCB) 6); As shown in Figure 5; The accurate position end points 61 (earth terminal, positive voltage terminal or negative voltage side) that should must be connected to this printed circuit board (PCB) 6 with the pin 422 that conducting resinl 5 electrically connects go up or can with the contact of accurate position end points 61 conductings on, therefore when this magnetic element 4 is worked on this printed circuit board (PCB) 6, even these magnetic element 4 generation electromagnetic interference; The iron core 41 of this magnetic element 4 can electrically connect through accurate position end points 61 generations of this conducting resinl 5 with printed circuit board (PCB) 6; With the accurate position of the current potential of stablizing this iron core 41, and the variation of offsetting electromagnetic interference whereby and being produced, to solve the problem of electromagnetic interference.
The magnetic element of the electromagnetic interference eliminated that the utility model provided when comparing each other with other prior aries, has more and gets the row advantage ready:
1, the utility model can use conducting resinl to reach the purpose of electric connection between iron core and arbitrary pin, and the accurate position end points one of this pin and printed circuit board (PCB) produces and electrically connects, and can make the iron core current potential stable, to offset the problem of electromagnetic interference.
2, the utility model does not need extra increase connecting line to solve the problem of electromagnetic interference, also can save manufacturing cost simultaneously and reduce unwanted material cost; In addition, also can overcome the existing puzzlement that connecting line caused (for example the length of line long cause the not wield puzzlement of bad influence of circuit and interference or connecting line length) of using.
By the detailed description of above preferred embodiment, hope can be known the characteristic and spirit of describing the utility model more, and is not to come the category of the utility model is limited with the above-mentioned preferred embodiment that is disclosed.On the contrary, its objective is that hope can contain in the category of the claim that is arranged in the desire application of the utility model institute of various changes and tool equality.
Claims (6)
1. the magnetic element that can eliminate electromagnetic interference; Be arranged on the printed circuit board (PCB); The bobbin and one that this magnetic element has a hollow axle tube by two iron cores, is set around the coiling on bobbin surface and forms; Wherein this iron core extends a stem stem towards the hollow axle tube of this bobbin; And this stem stem inserted this hollow axle tube so that this iron core and this bobbin link, it is characterized in that: these bobbin both sides have several pins, with so that this magnetic element can be welded on this printed circuit board (PCB); This iron core is being connected with at least one between the pin of accurate position end points and is being electrically connected by conducting resinl, this iron core can be produced with the accurate position end points of printed circuit board (PCB) electrically connect.
2. the magnetic element of eliminating electromagnetic interference as claimed in claim 1 is characterized in that: the shape of this stem stem can match with the hollow axle tube of this bobbin.
3. the magnetic element of eliminating electromagnetic interference as claimed in claim 1 is characterized in that: this hollow axle tube offers an opening towards stem stem, and this stem stem can be inserted in this hollow axle tube by opening.
4. the magnetic element of eliminating electromagnetic interference as claimed in claim 1 is characterized in that: this standard position end points is earth terminal, positive voltage terminal or negative voltage side.
5. the magnetic element of eliminating electromagnetic interference as claimed in claim 1 is characterized in that: this magnetic element is smooth being welded on the printed circuit board surface directly.
6. the magnetic element of eliminating electromagnetic interference as claimed in claim 1 is characterized in that: the pin of this magnetic element runs through printed circuit board (PCB), and is welded in the back side of printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201770096U CN202549540U (en) | 2012-04-24 | 2012-04-24 | Electromagnetic-interference-eliminable magnetic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201770096U CN202549540U (en) | 2012-04-24 | 2012-04-24 | Electromagnetic-interference-eliminable magnetic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202549540U true CN202549540U (en) | 2012-11-21 |
Family
ID=47170132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201770096U Expired - Fee Related CN202549540U (en) | 2012-04-24 | 2012-04-24 | Electromagnetic-interference-eliminable magnetic element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202549540U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744729A (en) * | 2016-04-22 | 2016-07-06 | 上海天马微电子有限公司 | Flexible circuit board, electronic equipment and electromagnetic interference filtering method for flexible circuit board |
| CN110444373A (en) * | 2018-05-02 | 2019-11-12 | 联宝电子股份有限公司 | Magnetic induction component and its manufacturing method |
-
2012
- 2012-04-24 CN CN2012201770096U patent/CN202549540U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744729A (en) * | 2016-04-22 | 2016-07-06 | 上海天马微电子有限公司 | Flexible circuit board, electronic equipment and electromagnetic interference filtering method for flexible circuit board |
| CN105744729B (en) * | 2016-04-22 | 2019-04-30 | 上海天马微电子有限公司 | A kind of flexible circuit board, electronic equipment and its filter out electromagnetic interference method |
| CN110444373A (en) * | 2018-05-02 | 2019-11-12 | 联宝电子股份有限公司 | Magnetic induction component and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131121 Address after: Taiwan Hsinchu County Chinese jhubei City, Taiwan 1 yuan a Street No. 6 Building 3 Patentee after: Yang power electronic Limited by Share Ltd Address before: Taiwan Hsinchu County Chinese jhubei City, Taiwan 1 yuan a Street No. 6 Building 3 Patentee before: Verticil Electronics Co., Ltd. |
|
| 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: 20121121 Termination date: 20190424 |