CN208706396U - The inductor of low D.C. resistance, high saturation current - Google Patents
The inductor of low D.C. resistance, high saturation current Download PDFInfo
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- CN208706396U CN208706396U CN201821141896.5U CN201821141896U CN208706396U CN 208706396 U CN208706396 U CN 208706396U CN 201821141896 U CN201821141896 U CN 201821141896U CN 208706396 U CN208706396 U CN 208706396U
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- magnetic core
- interconnecting piece
- inductor
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- flatwise coil
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Abstract
The utility model provides the inductor of a kind of low D.C. resistance, high saturation current, including magnetic core, flatwise coil and Ci Gai.Flatwise coil is wound on magnetic core, and magnetic lid is covered on magnetic core.Groove is equipped at the top of magnetic core, the surface of two opposite sides of magnetic core is symmetrically equipped with stage portion.Flatwise coil tool is pin there are two the base portion of same thickness, is connected between two base portions by interconnecting piece.Interconnecting piece thickness face towards inductor widths face it is vertical be embedded in a groove, two base portions are separately mounted to two stage portion surfaces.Flatwise coil interconnecting piece in the utility model inductor is mounted in magnetic core using vertical embedded mode, so that magnetic core recess width reduces, increase magnetic core surface area, improve inductance coefficent, to increase the inductance air gap between bottom magnetic core upper surface and upper cover magnetic core lower surface, and the advantage that flatwise coil can use inductor short transverse increases the width of coil to reduce D.C. resistance.
Description
Technical field
The utility model relates to electronic components, and in particular to a kind of low D.C. resistance, high saturation current inductor.
Background technique
Existing many inductors replace traditional coil turned to by conducting wire using flatwise coil, thus not changing
Under the premise of original inductor dimensions, coil and bigger magnetic core cooperate, and so that the D.C. resistance of inductor is become smaller, saturation current
Become larger, to obtain more preferably electrical characteristic.Using the inductor of flatwise coil, conventional design is flatwise coil using horizontal knot
Structure insertion is mounted in the groove on magnetic core surface, and the gap between flatwise coil and corresponding groove forms air gap.Such as the patent No.
Flatwise coil inductor disclosed in patent for CN201310609092, the inductor are set at the top of U-shaped magnetic core and two sides
Groove is set, for flatwise coil along horizontal folding surface downward bending, middle interconnecting piece lining is parallel with bottom portion of groove after fold, i.e., flat
Coil is inlaid in the groove of magnetic core using horizontal type structure, and U-shaped magnetic core and I type magnetic core surface form gas after flatwise coil insertion
Gap.
Used inductor on the mainboard of some High-effective Service devices, work station or computer needs to have stronger anti-full
And ability.It to improve inductor anti-saturation ability, can be realized by increasing air gap, and be limited in same Outside Dimensions
Under, increase air gap and the width by reducing increase groove is needed to realize, but so must just reduce and be embedded into U-shaped magnetic core
The size of flatwise coil middle part bit width in top groove, but due to the technique limitation of production flatwise coil, it is desirable that in
Between the width at position need the thickness more than or equal to flatwise coil, when width closer to be less than base material thickness when difficulty of processing
Bigger, safety of structure reduces, and the sectional area of flatwise coil is caused to reduce and increase D.C. resistance to increase coil damage
Consumption.Increase size, also can achieve enhancing saturation current and reaches D.C. resistance and other electrical design requirements.And it is some high
The mainboard of effect server, work station or computer cannot use oversized inductor due to stringent space limitation.Therefore, have
Necessity designs one kind and had both met size requirement, and the flatwise coil inductor that anti-saturation ability is strong.
Summary of the invention
The purpose of this utility model is to provide one kind both to have met size requirement, and the flatwise coil electricity that anti-saturation ability is strong
Sensor.When the height dimension of inductor not less than width dimensions and has low D.C. resistance and high saturated characteristic and smaller width
When bonding pad requirements, advantage is especially apparent.In addition, the pin of this inductor be it is upright, sky is formed on pin bottom and magnetic core bottom
Chamber can install other tiny electronic components inside this cavity, to realize higher component packing density, save
The installation space of whole circuit board.
To achieve the above object, low D.C. resistance provided by the utility model, high saturation current inductor include magnetic core,
Flatwise coil and Ci Gai.Flatwise coil is wound on magnetic core, and magnetic lid is covered on magnetic core.Wherein, groove, magnetic are equipped at the top of magnetic core
The surface of two opposite sides of core is symmetrically equipped with stage portion.Flatwise coil has interconnecting piece and two identical base portions, two bases
It is connected between portion by interconnecting piece, the vertical setting of interconnecting piece, interconnecting piece both ends are connected to two toward horizontal direction bending rear vertical type
The thickness face of base portion.Interconnecting piece is vertical to be embedded in a groove, and two base portions are separately mounted to two stage portion surfaces.
Preferably, flatwise coil is integrally formed, and the folding surface of flatwise coil is vertically arranged and the width face towards magnetic core.
Preferably, the bottom of two base portions is equipped with a port.
Preferably, thickness of the thickness of interconnecting piece less than two base portions.
Preferably, interconnecting piece with a thickness of 0.80 millimeter, the thickness of two base portions is 1.2 millimeters.
Preferably, using the joint face of interconnecting piece and base portion as interface, two base portions are divided into the first base portion and the second base
Portion.Wherein, one ipsilateral with interconnecting piece is the first base portion, and another is the second base portion.The thickness of interconnecting piece and the first base portion
Thickness it is equal, the thickness of the thickness of the first base portion less than the second base portion.
Preferably, the thickness of the thickness of interconnecting piece and the first base portion is 0.80 millimeter, the second base portion with a thickness of 1.2 milli
Rice.
By above-mentioned scheme it is found that using the installation side of horizontal embedded magnetic core relative to flatwise coil in existing inductor
Formula, the flatwise coil interconnecting piece in the utility model inductor is mounted in magnetic core using vertical embedded mode, using specific
In the case that core material and inductor dimensions are severely limited, the broadside of flatwise coil is set as height side, sufficiently benefit
With flatwise coil and magnetic core short transverse advantage so that recess width accomplish it is as small as possible, to increase on magnetic core
Surface area improves inductance coefficent, therefore, in the equivalent inductance of application, expands inductance air gap, improves anti-saturation energy
Power.In addition, further increasing magnetic core upper surface area by the thickness for further flattening flatwise coil interconnecting piece, improving
Inductance coefficent expands inductance air gap.In addition, notch is arranged in the interconnecting piece of flatwise coil, is conducive to fixed inductance, forms
Multiple spot climbs tin, more firm, and antivibration kinetic force is better, is also possible to guarantee that inductor installation is flat in port welding lead etc.
It is whole.
Detailed description of the invention
Fig. 1 is the structure chart of the inductor first embodiment of the low D.C. resistance of the utility model, high saturation current.
Fig. 2 is the structural exploded view of the inductor first embodiment of the low D.C. resistance of the utility model, high saturation current.
Fig. 3 is the structure chart of flatwise coil shown in Fig. 2.
Fig. 4 is the structure chart of the inductor second embodiment of the low D.C. resistance of the utility model, high saturation current.
Fig. 5 is the structural exploded view of the inductor second embodiment of the low D.C. resistance of the utility model, high saturation current.
Fig. 6 is the structure chart of flatwise coil shown in fig. 5.
Fig. 7 is the structure chart of the inductor 3rd embodiment of the low D.C. resistance of the utility model, high saturation current.
Fig. 8 is the structural exploded view of the inductor 3rd embodiment of the low D.C. resistance of the utility model, high saturation current.
Fig. 9 is the structure chart of flatwise coil shown in Fig. 8.
The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.In order to which the present embodiment is better described,
The certain attachmentes of attached drawing have omission, zoom in or out；To those skilled in the art, in attached drawing certain known features and
It illustrates to omit will be understood by.
Specific embodiment
First embodiment
Referring to Fig. 1, low D.C. resistance provided by the utility model, high saturation current inductor include magnetic core 1, flat wire
Circle 2 and magnetic lid 3, flatwise coil 2 are wound on magnetic core 1, and magnetic lid 3 is covered on 1 top of magnetic core, and electricity is formed between magnetic core 1 and magnetic lid 3
Feel air gap.
Referring to fig. 2, the top of magnetic core 1 is equipped with groove 11, and the surface of two opposite sides of magnetic core 1 is symmetrically equipped with stage portion
12.Flatwise coil 2 is integrally formed, and for the tool of flatwise coil 2 there are two identical base portion 21, the interconnecting piece 22 of flatwise coil 2 is placed in two
The side of a base portion 21, the both ends of interconnecting piece 22 are connected to two base portions 21 toward vertical respectively after horizontal direction bending.Relative to
Interconnecting piece takes that horizontal (i.e. for connecting portion in the top of base portion, the broadside of interconnecting piece is horizontally disposed, interconnecting piece two in conventional design
End downward bending is connected to the upper surface of two base portions.At this time.The folding surface of flatwise coil is horizontally disposed, and folding surface is towards magnetic core
Horizontal end face) two base portions of connection design, interconnecting piece 22 in the present embodiment is vertical to be connected to two base portion 21(and connects
The broadside in portion is vertically arranged).The upper half of two base portions 21 is narrower than the width of lower half portion, two bases of vertical connection of interconnecting piece 22
When portion 21, the outermost of interconnecting piece 22 is flushed with the side of two base portions 21.Interconnecting piece 22 is vertical to be inlaid in groove 11, flat
The folding surface 220 of coil 2 is vertically arranged and the width face 10 vertical towards magnetic core 1, two base portions 21 are then separately mounted to magnetic core 1
Two stage portions 12 surface.
Referring to Fig. 3, in the present embodiment the interconnecting piece 22 of flatwise coil 2 with a thickness of W1, the height of interconnecting piece 22 is H1, two
A base portion 21 with a thickness of D1.22 both ends of interconnecting piece of flatwise coil 2 are connected to two toward same level direction bending rear vertical type
The vertical thickness face 210 of base portion 21.In the present embodiment, thickness face 210 refers to the plane with a thickness of D1 on base portion 21.Magnetic core 1
The width of the groove 11 at top is greater than the thickness W1 of interconnecting piece 22, and the height H1 of interconnecting piece 22 is greater than the thickness of interconnecting piece 22
W1.Gap between groove 11 and the interconnecting piece 22 of flatwise coil 2 is less than or equal to the thickness W1 of interconnecting piece 22.
In the present embodiment the interconnecting piece 22 of flatwise coil 2 using conventional horizontal type structure (before not using vertical structure,
The interconnecting piece 22 of flatwise coil 2 is placed in the top of two base portions 22, and the both ends bending straight down of interconnecting piece 22 is simultaneously separately connected
To the upper surface of two base portions 21) when, the thickness of the interconnecting piece of horizontal type structure is the height H1 of the interconnecting piece 22 of vertical structure,
The height of the interconnecting piece of horizontal type structure is the thickness W1 of the interconnecting piece 22 of vertical structure.
As it can be seen that being mounted on magnetic core 1 by the way that the interconnecting piece 22 of flatwise coil 2 is changed to vertical insertion by conventional horizontal insertion
Groove 11 in, under the premise of not changing the size of magnetic core 1, take full advantage of interconnecting piece 22 in the advantage of short transverse, even
The thickness of socket part 22 becomes smaller D1 from H1, to reduce the width of groove 11, that is, increases 1 surface area of magnetic core, improves
Inductance coefficent, so as to increasing air gap to improve the anti-saturation ability of inductor.
In addition, the interconnecting piece 22 of flatwise coil 2 is further flattened in width direction by flattening technique in the present embodiment,
The width dimensions of groove 11 are further decreased, that is, increases magnetic core surface area, improves inductance coefficent, increase inductance air gap.
In the present embodiment, thickness W1 of the interconnecting piece 22 after technique is further flattened in thickness direction progress is 0.80 milli
Rice, the height H1 of interconnecting piece 22 are 1.8 millimeters, and the thickness D1 of two base portions 21 is 1.2 millimeters.
It can be seen that the interconnecting piece 22 of the present embodiment is changed to from horizontal insertion using vertical embedded structure, and to interconnecting piece
22 after thickness direction carries out further flattening technique, and the thickness of interconnecting piece 22 is reduced to by 1.8 millimeters of former horizontal type structure
0.80 millimeter, the thickness of interconnecting piece 22 reduces 1.0 millimeters.Corresponding, 11 width of groove reduces 1.0 millimeters, increases electricity
Feel air gap, thus the anti-saturation ability of the inductor of significant increase, inductor can get more preferably electrical characteristic.
Second embodiment
Inductor provided in this embodiment carries out on the basis of being mainly the inductor provided by first embodiment into one
The improvement of step, main difference place are that the structure of flatwise coil is different.
Referring to fig. 4 with Fig. 5, the component part of high saturated inductor provided in this embodiment equally includes magnetic core 4, flat wire
Circle 5 and magnetic lid 6.Flatwise coil 5 is wound on magnetic core 4, and magnetic lid 6 is covered on 4 top of magnetic core.
Referring to Fig. 6, the tool of flatwise coil 5 is connected between two base portions 51 by interconnecting piece 52 there are two identical base portion 51.
Compared with the flatwise coil 2 in first embodiment, the bottom of two base portions 51 of the flatwise coil 5 in the present embodiment is provided with
The port 511 of a port 511, both sides is oppositely arranged.Two ports 511 can be to be used to more preferably when inductor installation
Ground positions fixed inductance, or the welding lead in port 511, enables inductor is smooth to install etc..
Combination, the size of flatwise coil of inductor in the present embodiment, such as thickness W2, the interconnecting piece of interconnecting piece 52
Height H2, the thickness D2 of base portion 52 etc., it is identical with the inductor in first embodiment, referring specifically to first embodiment
It describes, is no longer repeated one by one in the present embodiment.
3rd embodiment
Inductor provided in this embodiment carries out on the basis of being mainly the inductor provided by first embodiment into one
The improvement of step, main difference place are that the structure of flatwise coil is different.
Referring to Fig. 7 and Fig. 8, compared with the inductor in first embodiment, high saturated inductor provided in this embodiment is same
Sample includes magnetic core 7, flatwise coil 8 and magnetic lid 9.Flatwise coil 8 is wound on magnetic core 7, and magnetic lid 9 is covered on 7 top of magnetic core.
Referring to Fig. 9, compared with the inductor in first embodiment, there are two phases for the flatwise coil 8 of the present embodiment equally tool
With base portion 81, connected by interconnecting piece 82 between two base portions 81.The difference is that in the present embodiment, with interconnecting piece 82
Joint face 810 with base portion 81 is interface, and two base portions 81 are respectively divided into the first base portion 811 and the second base portion 812.Such as Fig. 6
Shown, ipsilateral for the first base portion 811 with interconnecting piece 82, another is then the second base portion 812.In the present embodiment, the first base
Portion 811 is further flattened by flattening technique, keeps the thickness D31 of the first base portion 811 equal with the thickness W3 of interconnecting piece 82, makes
The thickness D31 of one base portion 811 less than the second base portion 812 thickness D32, to further enhance the anti-saturation ability of inductor.
The thickness D31 of the first base portion 811 and width W3 of interconnecting piece 82 is 0.80 millimeter in the present embodiment, the thickness of the second base portion 812
Spending D32 is 1.2 millimeters.
Fourth embodiment
The present embodiment is respectively to be arranged one in the bottom of the interconnecting piece of flatwise coil two sides on the basis of 3rd embodiment
Port as described in second embodiment.
In summary each embodiment scheme it is found that inductor using specific core material and inductor dimensions by tight
In the case that lattice limit, flatwise coil interconnecting piece by being turned down insertion side of the face towards inductor widths face by the utility model
Formula, the base material thickness direction of flatwise coil interconnecting piece are assemblied in the width direction of magnetic core groove in parallel, i.e., vertical embedded mode peace
In magnetic core, the advantage of flatwise coil short transverse is made full use of, so that recess width reduces, that is, increases magnetic core surface
Product, improves inductance coefficent, so as to increase inductance air gap, and flatwise coil can use the advantage of inductor short transverse
Increase the width of coil without influencing recess width, inductor more easily reachs low D.C. resistance, while high saturation current is most
Good electrical characteristic.
The above is only the preferred embodiment of the present invention, is not intended to limit the invention.It is all in the utility model
Spirit and principle within, any modification, equivalent replacement, improvement and so on, as the thickness of connecting portion is equal to or less than
Substrate pin thickness should be included within the scope of protection of this utility model.
Claims (7)
1. the inductor of low D.C. resistance, high saturation current, including magnetic core, flatwise coil and Ci Gai, the flatwise coil coiling
On the magnetic core, the magnetic lid is covered on the magnetic core, it is characterised in that:
Groove is equipped at the top of the magnetic core, the surface of two opposite sides of magnetic core is symmetrically equipped with stage portion；The flat wire
Circle has interconnecting piece and two identical base portions, is connected between two base portions by interconnecting piece, the interconnecting piece is vertical to be set
It sets, the interconnecting piece both ends connect the thickness face of two base portions toward horizontal direction bending rear vertical type；The interconnecting piece is vertical
It is inlaid in the groove, two base portions are separately mounted to two stage portion surfaces.
2. the inductor of low D.C. resistance according to claim 1, high saturation current, it is characterised in that:
The flatwise coil is integrally formed, and the folding surface of the flatwise coil is vertically arranged and the width face towards the magnetic core.
3. the inductor of low D.C. resistance according to claim 1, high saturation current, it is characterised in that:
The bottom of two base portions is equipped with a port.
4. the inductor of low D.C. resistance according to any one of claims 1 to 3, high saturation current, it is characterised in that:
Thickness of the thickness of the interconnecting piece less than two base portions.
5. the inductor of low D.C. resistance according to claim 4, high saturation current, it is characterised in that:
The interconnecting piece with a thickness of 0.80 millimeter, two base portions with a thickness of 1.2 millimeters.
6. the inductor of low D.C. resistance according to any one of claims 1 to 3, high saturation current, it is characterised in that:
Using the joint face of the interconnecting piece and the base portion as interface, two base portions are divided into the first base portion and the second base
Portion, is the first base portion with the ipsilateral part of the interconnecting piece, and another part is the second base portion；The thickness of the interconnecting piece and described
The thickness of first base portion is equal, and the thickness of first base portion is less than the thickness of second base portion.
7. the inductor of low D.C. resistance according to claim 6, high saturation current, it is characterised in that:
The thickness of the thickness of the interconnecting piece and first base portion is 0.80 millimeter, second base portion with a thickness of 1.2
Millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821141896.5U CN208706396U (en) | 2018-07-18 | 2018-07-18 | The inductor of low D.C. resistance, high saturation current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821141896.5U CN208706396U (en) | 2018-07-18 | 2018-07-18 | The inductor of low D.C. resistance, high saturation current |
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| CN208706396U true CN208706396U (en) | 2019-04-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113053636A (en) * | 2021-03-15 | 2021-06-29 | 墨尚电子技术(上海)有限公司 | Large-current surface-mounted power inductor and manufacturing method thereof |
| US11049638B2 (en) | 2016-08-31 | 2021-06-29 | Vishay Dale Electronics, Llc | Inductor having high current coil with low direct current resistance |
| US11948724B2 (en) | 2021-06-18 | 2024-04-02 | Vishay Dale Electronics, Llc | Method for making a multi-thickness electro-magnetic device |
-
2018
- 2018-07-18 CN CN201821141896.5U patent/CN208706396U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11049638B2 (en) | 2016-08-31 | 2021-06-29 | Vishay Dale Electronics, Llc | Inductor having high current coil with low direct current resistance |
| US11875926B2 (en) | 2016-08-31 | 2024-01-16 | Vishay Dale Electronics, Llc | Inductor having high current coil with low direct current resistance |
| CN113053636A (en) * | 2021-03-15 | 2021-06-29 | 墨尚电子技术(上海)有限公司 | Large-current surface-mounted power inductor and manufacturing method thereof |
| US11948724B2 (en) | 2021-06-18 | 2024-04-02 | Vishay Dale Electronics, Llc | Method for making a multi-thickness electro-magnetic device |
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