CN204066948U - Inductor - Google Patents
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- CN204066948U CN204066948U CN201420498152.4U CN201420498152U CN204066948U CN 204066948 U CN204066948 U CN 204066948U CN 201420498152 U CN201420498152 U CN 201420498152U CN 204066948 U CN204066948 U CN 204066948U
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 52
- 239000000758 substrate Substances 0.000 claims abstract description 47
- 238000000605 extraction Methods 0.000 claims description 36
- 238000005452 bending Methods 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 9
- 239000002826 coolant Substances 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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Abstract
The utility model provides a kind of inductor, comprises substrate, is installed at least one magnetic of described upper surface of base plate, and is arranged on the coil on described magnetic, and described coil at least has two coil exits; Described substrate is also provided with at least one boss, and each described boss all stretches out in described substrate side surfaces; And each described boss has the boss front with described upper surface of base plate homonymy, and with the boss bottom surface of base lower surface homonymy, and described boss bottom surface and described base lower surface are formed with difference in height; Each described boss is provided with the electrode be connected with external circuit.By arranging boss structure on inductor, not directly and circuit board contacts, there is gap between substrate and circuit board, this gap is conducive to thermal cycle for the substrate of inductance, also by arranging heat dissipation metal plate or fill coolant between gap, improve radiating efficiency further.
Description
Technical field
The utility model relates to inductance element technical field, particularly a kind of inductor.
Background technology
The end of winding directly extends from the same side by traditional power inductance, is fixedly welded on circuit board by inductor as stitch.This kind of structure inductance only has fixing point in side, and the evenness of stitch is difficult to ensure, when inductor volume is larger, with the poor bonding strength of circuit board.
Existing a kind of technical scheme has made improvement to this, be installed on by power inductor in flat-shaped substrate, increases by one be welded and fixed with dummy electrode in the non-stitch side of flat panel substrate, then is close to circuit board and installs.Although this kind of structure increases with the structural strength of circuit board, because substrate fits on circuit board completely, under the environment for use of big current, even if be coated with thermal grease on substrate and circuit board, also because of the quantity not sufficient of coating, radiating effect can be affected and causes inductance magnetic saturation.If instead coating thermal grease is too much, then can affect the stationarity that inductor is installed.
Summary of the invention
Based on this, cause the problem of radiating effect difference for solving aforesaid substrate laminating circuit board, the utility model provides a kind of inductor.
The technical solution of the utility model is as follows:
A kind of inductor, comprise substrate, be installed at least one magnetic of described upper surface of base plate, and be arranged on the coil on described magnetic, described coil at least has two coil exits; Described substrate is also provided with at least one boss, and each described boss all stretches out in described substrate side surfaces; And each described boss has the boss front with described upper surface of base plate homonymy, and with the boss bottom surface of base lower surface homonymy, and described boss bottom surface and described base lower surface are formed with difference in height; Each described boss is provided with the electrode be connected with external circuit.
Boss installed by the substrate of inductor, because the lower surface of boss lower surface and substrate exists difference in height, when inductor is installed on external circuit, the electrode on boss can be made directly to contact with the circuit board of external circuit, and substrate directly can not contact with circuit board, thus make to there is gap between substrate and circuit board, under the environment for use of big current, this gap is conducive to thermal cycle, namely improve radiating efficiency, inductance magnetic saturation can not be caused because radiating effect is bad, thus the action effect of inductor can be ensured, ensure stability during inductor work.
Below further technical scheme is described:
Preferably, each described boss all offers groove, described groove extends to boss bottom surface from described boss front, and described electrode is embedded in described groove.Groove offered by boss, and electrode is embedded in groove, be conducive to electrode mounting arrangements, electrode can not be made too outstanding, and affect the layout of other structures, also compare neat appearance in appearance.
Preferably, the end of described electrode extends to the medium position of described boss bottom surface, and described groove and described electrode pair should.Electrode is extended to boss bottom surface medium position, i.e. position near the half of boss bottom surface, can fix electrode and welding circuit board easily, also can ensure that electrode is connected well with circuit board.
Preferably, the end of described electrode extends and passes completely through described boss bottom surface, and described groove and described electrode pair should.Electrode is extended through boss bottom surface, electrode and welding circuit board connection area can be increased, make to be connected between electrode with circuit board more solid and reliable.
Preferably, the side of described electrode extends alignment to boss side surfaces simultaneously.While making electrode extend forward through boss bottom surface, also extend to boss side, even extend bending to the boss side surfaces adjacent with boss bottom surface and boss side surfaces is enveloped, increasing the bonding area between electrode and board pads further, inductance is more firmly welded on circuit board.
Preferably, each described electrode extends to boss bottom surface from the bending of described boss front, and wherein at least two electrodes are extraction electrode, and each described coil exit correspondence connects an extraction electrode.Described electrode all can extend to boss bottom surface from the bending of boss front, and the groove accordingly on boss also extends to boss bottom surface from boss front, and electrode is inlayed in a groove completely, electrode is connected closely reliable with boss.
Preferably, described extraction electrode is absolute electrode, and described extraction electrode one end is provided with buckle structure, and described buckle structure and coil exit are fastened and connected.Extraction electrode can be set to independent form, and arranges buckle structure in one end of extraction electrode, can with coil exit snapping, thus do not need the two to be welded to connect, convenient and simple for connection, decrease manufacture craft.
Preferably, described extraction electrode is directly formed by coil exit is bending.Extraction electrode can with coil exit integrated setting, be about to the two and be set to one, directly form extraction electrode by coil exit is extended bending, this structure simpler production is convenient, can be cost-saving further, simplifies manufacturing procedure; By welding manner, both can also be connected as one, but the former slightly shows complicated to technique relatively.
Preferably, comprise two stacked magnetics, described magnetic is E shape magnetic core, and the opening of two described E shape magnetic cores is relative, and described coil encircling is in the newel of two E shape magnetic cores.Select two E shape magnetic core openings relatively stacked and form magnetic, and being arranged on the newel of magnetic core by coil, structure is simple.Coil exit is drawn from the open side of magnetic, can be positioned at the same side, also can be positioned at not homonymy, simple and convenient.
Preferably, between described substrate and coil or/and or/and be coated with thermal conductivity solid between two adjacent magnetic bodies between coil and magnetic.By smearing thermal conductivity solid at these positions, making between them, to keep good heat conductivility, being conducive to inductor heat radiation, reducing working temperature.
The utility model has following outstanding advantage:
1, because there is boss structure, the substrate of inductance is not directly and circuit board contacts, gap is there is between substrate and circuit board, this gap is conducive to thermal cycle, also can by arranging heat dissipation metal plate or fill coolant between gap, while guaranteeing that the amount of suitable coolant does not affect installation evenness, can further improve radiating efficiency.
2, because there is boss structure, add the welded contact area between electrode and circuit board, inductance can be made more firmly to be fixed on circuit board.
3, be coated with thermal conductivity solid between magnetic core between substrate and winding, between winding and magnetic core and up and down, contribute to heat transfer, heat volatilization, significantly can reduce temperature during inductance work.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of inductor described in the utility model embodiment;
Fig. 2 is schematic perspective view when inductor is in the middle part of electrode extends to boss bottom surface described in the utility model embodiment;
Fig. 3 is the perspective exploded view of inductor described in the utility model embodiment;
Fig. 4 is the schematic perspective view of the boss of inductor on substrate described in the utility model embodiment when being set to entirety;
Fig. 5 is the schematic perspective view of inductor described in the utility model embodiment when electrode passes boss bottom surface;
Fig. 6 is the schematic perspective view of inductor described in the utility model embodiment when electrode passes boss bottom surface and extends to boss side;
Fig. 7 is the schematic perspective view of inductor when extraction electrode is connected by buckle structure with coil exit described in the utility model embodiment;
Fig. 8 is the schematic perspective view of inductor described in the utility model embodiment when electrode and coil exit junction smear solder(ing) paste;
Fig. 9 be inductor described in the utility model embodiment extraction electrode by coil exit extend be bent to form time schematic perspective view.
Description of reference numerals: 100-substrate, 200-magnetic (or E shape magnetic core), 210-newel, 300-coil (or winding), 310-coil exit, (400,410,420)-boss, (412,422)-groove, (510,510a, 510b)-extraction electrode, 512-buckle structure, 520-grounding electrode, 600-thermal conductivity solid, 700-solder(ing) paste.
Embodiment
Below embodiment of the present utility model is described in detail:
As shown in Figures 1 to 9, a kind of inductor, comprises substrate 100, and be installed at least one magnetic 200 of substrate 100 upper surface, and be arranged on the coil 300 on magnetic 200, coil 300 at least has two coil exits 310.This substrate 100 is also provided with at least one boss (400,410,420), each boss (400,410,420) all stretches out in substrate 100 side; And each boss (400,410,420) has the boss front with substrate 100 upper surface homonymy, and with the boss bottom surface of substrate 100 lower surface homonymy, and boss bottom surface and substrate 100 lower surface are formed with difference in height.And, each boss (400,410,420) is provided with the electrode (510,510a, 510b, 520) be connected with external circuit.
Particularly, as shown in Figure 3, this inductor comprises two stacked magnetics 200, and magnetic 200 is E shape magnetic core, and the opening of two E shape magnetic cores is relative, and coil 300 is surrounded on the newel 210 of two E shape magnetic cores.Select two E shape magnetic core openings relatively stacked and form magnetic 200, and being arranged on by coil 300 on the newel 210 of E shape magnetic core, structure is simple.Coil exit 310 is drawn from the open side of magnetic 300, can be positioned at the same side, also can be positioned at not homonymy.In the present embodiment, multiple coil exits 310 are arranged on the same side of coil 300, so conveniently arrange corresponding electrode, and the boss of installing electrodes, and compact conformation, installs simple and convenient., except selecting E shape magnetic core, also can select other forms of magnetic core herein, as I, U, EC, ETD shape, square (RM, EP, PQ), tank shape (PC, RS, DS) and circle etc., as long as same effect can be reached.In addition, except two magnetic 200 overlaps, can also be a magnetic 200 or the situation more than two magnetic 200 overlaps, coil 300 be arranged in magnetic 200, and is stretched out from magnetic 200 aperture position by coil 300 exit.
And coil 300 winding here can be flat enamelled wire winding, and coil exit 310 extends from the side of EE type magnetic core, in bending, extend to the electrode section of base boss and be connected and fixed with the electrode (510,510a, 510b) on boss 410.In addition, coil 300 winding also can be common winding, and coil exit 310 also can be set to cylindric or flat.The electrode (510 of connecting coil exit 310,510a, 510b) also can be set to cylindric, or the part of connecting coil exit 310 is set to cylindric and the part connecting external circuit and circuit board is set to flat, can connection area be increased, make the connection of electrode and circuit board closely reliable.In the present embodiment, preferred coil 300 is flat enamelled wire winding, and its coil exit 310 is also all set to flat, and electrode (510,510a, 510b, 520) is also all set to flat belt-like, and unity of form is convenient to install and is fixed.
Boss (400 installed by the substrate 100 of inductor, 410, 420), because of boss (400, 410, 420) there is difference in height in the lower surface of lower surface and substrate 100, when making inductor be installed on the external circuit board, boss (400, 410, 420) electrode (510 on, 510a, 510b, 520) and circuit board contacts, and substrate 100 can not with circuit board contacts, make to there is gap between substrate 100 and circuit board, under the environment for use of big current, this gap is conducive to thermal cycle, namely improve radiating efficiency, inductance magnetic saturation can not be caused because radiating effect is bad, thus the action effect of inductor can be ensured, ensure stability during inductor work.
As shown in Figure 4, the boss 400 that this inductor is arranged can be integral type, multiple electrode (510,520) be arranged separately on this boss 400, substrate 100 and the external circuit board are kept apart certain gap by boss 400, and structure is simple, and boss 400 is quick with the convenient fixing of substrate 100, but boss 400 is relative with the contact area of substrate 100 bigger than normal, has certain influence to the heat radiation of inductor; In addition, as shown in Figure 1 to Figure 2, the boss (410 this inductor arranged, 420) also can be split type, i.e. each electrode (510 or 520) correspondence one independently boss (410 or 420), flexible for installation, structure is slightly complicated; In addition, can also in conjunction with the above two, be arranged on by the multiple electrodes 510 being positioned at same position place on a boss 410, be installed on another boss 420 by the multiple electrodes being positioned at another position, structure is relatively simple, install also relatively flexible, substrate 100 and the contact of boss (410,420) can be reduced in addition as little as possible, increase the void area of substrate 100, i.e. increasing heat radiation area, keeps good heat dispersion as far as possible.The third scheme preferred in the present embodiment, when inductor has three electrodes, front and back position arranges two boss (410,420) on the substrate 100, a boss 410 is installed two electrodes 510, another boss 420 is installed an electrode 520.
Each boss (400,410,420) all offers groove (412,422), this groove (412,422) extends to boss bottom surface from boss front, and electrode (510,510a, 510b, 520) be embedded in groove (412,422).Groove offered by boss, and electrode is embedded in groove, be conducive to electrode mounting arrangements, electrode can not be made too outstanding, and affect the layout of other structures, also compare neat appearance in appearance.In addition, also only can offer groove (412,422) at the side of boss (400,410,420), and not offer groove in boss front and boss bottom surface, only at boss side, electrode be carried out inlaying location and installation; Or offer groove (412,422) at the side of boss (400,410,420) and boss bottom surface, and do not offer groove in boss front; Or offer groove (412,422) at boss (400,410,420) side and boss front, and do not offer groove in boss bottom surface.In a word, can carry out inlaying to a part for electrode (510,510a, 510b, 520) fixing.In addition, groove (412,422) all can be offered in the side of known boss front, boss and boss bottom surface, makes electrode be embedded in this groove completely, fixing reliable, also can not form interference effect with other positions.The present embodiment preferably this side at boss front, boss and boss bottom surface all offers the situation of groove (412,422), makes the compact conformation of inductor reliable.In addition, directly electrode (510,510a, 510b, 520) can also be fixed in boss surface, and not need to offer groove on boss.But in above-mentioned various situation, electrode is all the surfaces being close to boss (400,410,420), extends to boss bottom surface from the bending of boss front, be connected with the circuit board of external circuit to facilitate electrode.
In one case, as shown in Figure 2, the end of electrode (510,520) extends to the medium position of boss bottom surface, and groove (412,422) should with electrode pair.Electrode (510,520) is extended to boss bottom surface medium position, i.e. position near the half of boss bottom surface, can easily by electrode (510,520) fix with welding circuit board, also can ensure that electrode (510,520) is connected well with circuit board.
In another case, as shown in Figure 5, the end of electrode 510a extends and passes completely through boss bottom surface, and groove (412,422) is corresponding with electrode (510a, 520).Electrode 510a is extended through boss bottom surface, electrode 510a and welding circuit board connection area can be increased, make electrode (510a, 520) be connected between circuit board more solid and reliable.Further, as shown in Figure 6, the side of electrode 510b extends alignment to boss 410 1 side simultaneously, namely while electrode 510b extends forward through boss bottom surface, also extend to boss side, even extend bending to the boss side surfaces adjacent with boss bottom surface and boss side surfaces is enveloped, increase the bonding area between electrode 510b and board pads further, inductance is more firmly welded on circuit board, and now corresponding with electrode 510b groove 412 side is completely unlimited.
Each electrode on inductor (510 or 510a or 510b or 520) extends to boss bottom surface from the bending of boss front, and wherein at least two electrodes are extraction electrode (510,510a, 510b), each coil exit 310 correspondence connects an extraction electrode.Described electrode (510,510a, 510b) all can extend to boss bottom surface from the bending of boss front, groove 412 accordingly on boss 410 also extends to boss bottom surface from boss front, electrode (510,510a, 510b) be embedded in completely in groove 412, electrode (510,510a, 510b) is connected closely reliable with boss 410.In the present embodiment, inductor has the coil exit 310 that two are arranged on the same side, just has two extraction electrodes 510 correspondingly, and these two extraction electrodes 510 are all arranged on the same side.So just corresponding installation base 410, two extraction electrodes 510 arranging an extraction electrode are arranged in the both sides of this boss 410 on the substrate 100.
As shown in Figure 7, above-mentioned extraction electrode 510 can be set to absolute electrode, and one end of extraction electrode 510 is provided with buckle structure 512, and buckle structure 512 and coil exit 310 are fastened and connected.Extraction electrode 510 is set to independent form, and in one end of extraction electrode 510, buckle structure 512 is set, can with coil exit 310 snapping, thus do not need the two to be welded to connect (or being connected by other more complicated modes), convenient and simple for connection, decrease manufacture craft.Further, solder(ing) paste 700 is smeared to ensure conducting (as shown in Figure 8) by buckle structure 512 place of being fastened and connected of coil exit 310 and extraction electrode 510, with the good conduction of hold-in winding exit 310 and extraction electrode 510.And independently extraction electrode 510 or other electrodes (as grounding electrode 520) can be embedded in the groove (412 or 422) that boss is offered.
In addition, as shown in Figure 9, extraction electrode 510a also directly can be formed by coil exit 310 is bending.Extraction electrode 510a can with coil exit 310 integrated setting, be about to the two and be set to one, directly form extraction electrode 510a by coil exit 310 being extended bending, this structure simpler production is convenient, can be cost-saving further, simplify manufacturing procedure; In addition, by welding manner, both can also be connected as one, but the former slightly shows complicated to technique relatively.Equally, the part that extraction electrode 510a is arranged on boss can be embedded in boss groove 412 equally.
Except above-mentioned extraction electrode (510,510a, 510b) outward, this inductor also can arrange grounding electrode 520, and this grounding electrode 520 is arranged on the opposite side of magnetic 200, with extraction electrode (510,510a, 510b) be positioned at relative both sides.In the present embodiment, this grounding electrode 520 and be arranged on equally independently on grounding electrode installation base 420, it connects external circuit and substrate 100, is absolute electrode.Offer groove 422 in the lateral location of this boss, the side of this grounding electrode 520 is inlayed and is installed in this groove 422.
In addition, between substrate 100 and coil 300 or/and between coil 300 and magnetic 200 or/and be coated with thermal conductivity solid 600 between two adjacent magnetic bodies 200.By smearing thermal conductivity solid 600 at these positions, making between them, to keep good heat conductivility, being conducive to inductor heat radiation, reducing working temperature.
The above embodiment only have expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (10)
1. an inductor, is characterized in that, comprises substrate, is installed at least one magnetic of described upper surface of base plate, and is arranged on the coil on described magnetic, and described coil at least has two coil exits;
Described substrate is also provided with at least one boss, and each described boss all stretches out in described substrate side surfaces; And each described boss has the boss front with described upper surface of base plate homonymy, and with the boss bottom surface of base lower surface homonymy, and described boss bottom surface and described base lower surface are formed with difference in height;
Each described boss is provided with the electrode be connected with external circuit.
2. inductor according to claim 1, is characterized in that, each described boss all offers groove, and described groove extends to boss bottom surface from described boss front, and described electrode is embedded in described groove.
3. inductor according to claim 2, is characterized in that, the end of described electrode extends to the medium position of described boss bottom surface, and described groove and described electrode pair should.
4. inductor according to claim 2, is characterized in that, the end of described electrode extends and passes completely through described boss bottom surface, and described groove and described electrode pair should.
5. inductor according to claim 4, is characterized in that, the side of described electrode extends alignment to boss side surfaces simultaneously.
6. the inductor according to claim 1-5 any one, it is characterized in that, each described electrode extends to boss bottom surface from the bending of described boss front, and wherein at least two electrodes are extraction electrode, and each described coil exit correspondence connects an extraction electrode.
7. inductor according to claim 6, is characterized in that, described extraction electrode is absolute electrode, and described extraction electrode is provided with buckle structure, and described buckle structure and coil exit are fastened and connected.
8. inductor according to claim 6, is characterized in that, described extraction electrode is directly formed by coil exit is bending.
9. the inductor according to claim 1-5 any one, is characterized in that, comprise two stacked magnetics, described magnetic is E shape magnetic core, and the opening of two described E shape magnetic cores is relative, and described coil encircling is in the newel of two E shape magnetic cores.
10. the inductor according to claim 1-5 any one, is characterized in that, or/and or/and be coated with thermal conductivity solid between two adjacent magnetic bodies between coil and magnetic between described substrate and coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498152.4U CN204066948U (en) | 2014-08-29 | 2014-08-29 | Inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498152.4U CN204066948U (en) | 2014-08-29 | 2014-08-29 | Inductor |
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| Publication Number | Publication Date |
|---|---|
| CN204066948U true CN204066948U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420498152.4U Expired - Lifetime CN204066948U (en) | 2014-08-29 | 2014-08-29 | Inductor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108377140A (en) * | 2016-11-23 | 2018-08-07 | 攀枝花市九鼎智远知识产权运营有限公司 | A kind of impulse generator |
| CN112349475A (en) * | 2019-08-07 | 2021-02-09 | 株式会社村田制作所 | Inductor component and electronic component |
-
2014
- 2014-08-29 CN CN201420498152.4U patent/CN204066948U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108377140A (en) * | 2016-11-23 | 2018-08-07 | 攀枝花市九鼎智远知识产权运营有限公司 | A kind of impulse generator |
| CN112349475A (en) * | 2019-08-07 | 2021-02-09 | 株式会社村田制作所 | Inductor component and electronic component |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |