CN102903492B - Magnetic element - Google Patents
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- CN102903492B CN102903492B CN201210260612.5A CN201210260612A CN102903492B CN 102903492 B CN102903492 B CN 102903492B CN 201210260612 A CN201210260612 A CN 201210260612A CN 102903492 B CN102903492 B CN 102903492B
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Abstract
The invention provides a kind of magnetic element.Even if under the environment being applied with vibration, also can prevent the magnetic element being installed on installation base plate from damaging.Magnetic element (1) comprises the 1st magnetic core (20), the coil (10) be wound on the regulation number of turns in the 1st magnetic core (20), the 2nd magnetic core (30) combined with the 1st magnetic core (20) and the metal terminal (40) being formed at the 2nd magnetic core (30).Metal terminal (40) comprising: installation portion (43), and it is connected with installation base plate; Scolding tin fillet forming portion (42), its outer wall along the 1st magnetic core (20) and the 2nd magnetic core (30) is formed, and promotes the formation of scolding tin fillet; Fixed part (41), it fixes the 1st magnetic core (20) and the 2nd magnetic core (30).
Description
Technical field
Even if the present invention relates to a kind of electronic circuit that is installed at the magnetic element being subject to also maintaining under the such environment of vibration effect performance continuously.
Background technology
Use all the time and be installed on electronic circuit and adjust the magnetic element of impedance etc., this electronic circuit is installed in automobile etc.Patent Document 1 discloses the usual structure of the magnetic element related in the past.This magnetic element comprises coil, the drum-shaped magnetic core of ferrite, endless core and metal terminal, this drum-shaped magnetic core at internal storage coil, this endless core storage drum-shaped magnetic core.Gap between endless core and drum-shaped magnetic core, hole portion are run through in the two ends of coil, and the two ends of coil are connected with metal terminal.
Patent documentation 1: Japanese Unexamined Patent Publication 2010 – No. 205783 publications
But magnetic element is in the past installed on installation base plate sometimes, this installation base plate is arranged on the electronic circuit of the machinery (such as automobile) being subject to intense vibration impact.In this case, although the installed surface of metal terminal is connected with installation base plate, along with installed surface is subject to the impact of successional vibration, installed surface easily damages with the coupling part be connected of metal terminal.Therefore, magnetic element comes off from installation base plate sometimes, or the location dislocation of drum-shaped magnetic core and endless core, thus causes mechanical breakdown.
Summary of the invention
The present invention is in view of situation so is above made, even if object is under the environment being subject to vibration effect, also can prevent the magnetic element damage being installed on installation base plate.
Magnetic element of the present invention comprises: the 1st magnetic core, and it has with the coil of regulation number of turns winding; 2nd magnetic core, it has above-mentioned coil in inside, combines along the periphery of above-mentioned 1st magnetic core and the 1st magnetic core; Metal terminal, its connecting coil and installation base plate.Further, metal terminal is made up of fixed part, and under the state that the 1st magnetic core and the 2nd magnetic core combine, this fixed part keeps this assembled state to fix the 2nd magnetic core unchangeably.
Adopt the present invention, because metal terminal fixes the 1st magnetic core and the 2nd magnetic core, so the vibration resistance of magnetic element entirety is improved, be not easy to damage.
Accompanying drawing explanation
Fig. 1 is the stereogram of the magnetic element in the 1st execution mode of the present invention.
Fig. 2 is the exploded perspective view of the magnetic element in the 1st execution mode of the present invention.
Fig. 3 is end view and the stereogram of the 2nd magnetic core in the 1st execution mode of the present invention.
Fig. 4 is structure chart when observing the magnetic element in the 1st execution mode of the present invention from the side.
Fig. 5 is the stereogram of the metal terminal in the 1st execution mode of the present invention.
Fig. 6 is the stereogram of the magnetic element in the 2nd execution mode of the present invention.
Embodiment
1. the 1st execution mode
Below, with reference to Fig. 1 ~ Fig. 5, the 1st execution mode (hereinafter referred to as " this example ") of the present invention is described.In the present embodiment, example the present invention be applied in magnetic element 1 is described, this magnetic element 1 is installed on not shown installation base plate, and this installation base plate is arranged on the electronic circuit of the such automobile being subject to vibration effect continuously etc.
Fig. 1 is the stereoscopic figure of the structure example of the magnetic element 1 representing this example.Figure 1A represents the example overlooking magnetic element 1, and Figure 1B represents the example looking up magnetic element 1.
Magnetic element 1 comprises: the 1st magnetic core 20; Coil 10, its by the spool 23(in the 1st magnetic core 20 with reference to Fig. 2 described later) on form with regulation number of turns coiled electrical conductor; 2nd magnetic core 30, it has coil 10 in inside, and the 2nd magnetic core 30 and the 1st magnetic core 20 combine; Metal terminal 40, it is formed at the 2nd magnetic core 30.Metal terminal 40 is separated into the shape of face symmetry, and the wound portion 44 of each terminal is wound with the end 11,12 of coil 10, utilizes not shown solder that end 11,12 is adhered to metal terminal.
Fig. 2 is the exploded perspective view of magnetic element 1.
Coil 10 has end 11,12 at two ends, coil 10 is wound on the spool 23 of the 1st magnetic core 20.
1st magnetic core 20 is formed as the drum-shaped magnetic core comprising spool 23, little flange part 21 and large flange part 22, and this spool 23 is wound with coil 10, and this little flange part 21 and large flange part 22 are located at the two ends of spool 23 respectively, and diameter is unequal.The radius ratio spool 23 of little flange part 21 is large, and the radius ratio little flange part 21 of large flange part 22 is large.
2nd magnetic core 30 is formed as the endless core of the annular around the 1st magnetic core 20, and under the state that the spool 23 the 1st magnetic core 20 had is inserted in the 2nd magnetic core 30, the 2nd magnetic core 30 combines with large flange part 22.Further, roughly 4 limits of the bottom surface of the 2nd magnetic core 30 are formed with the perisporium with plane perpendicular, the upper surface side end being formed on a pair aspectant 2 limit of perisporium is formed with the 1st notch part 31 and the 2nd notch part 32.
The diameter of the large flange part 22 of the 1st magnetic core 20 be formed as than little flange part 21 diameter large, a part for the lower surface of the perisporium of the 2nd magnetic core 30 is positioned on the upper surface of large flange part 22, thus the 1st magnetic core 20 and the 2nd magnetic core 30 are combined into a closed magnetic circuit.Owing to having space or coated nonmagnetic substance between the 1st magnetic core 20 and the 2nd magnetic core 30, so this closed magnetic circuit is configured to discrete magnetic circuit.In addition, by being formed as discrete magnetic circuit, the 1st magnetic core 20 and the 2nd magnetic core 30 not easily magnetic saturation, can improve the direct current overlapping features of magnetic element 1 entirety.
In addition, Mn – Zn system, Ni – Zn series ferrite material manufacture the 1st magnetic core 20 and the 2nd magnetic core 30 is usually utilized.But the present invention is not limited to these Ferrite Materials, also the magnetic material such as resist permalloy, alsifer can be used.
Further, metal terminal 40 comprises fixed part 41, scolding tin fillet forming portion 42, installation portion 43 and wound portion 44.Metal terminal is in the past formed flatly, and has larger installed surface, so think the high with the bonding strength of installation base plate of metal terminal always.But the installed surface being formed as tabular is easily out of shape, there occurs between the installed surface of distortion and each part and easily produce gap.When there is such gap, the bonding strength of each part between metal terminal and drum-shaped magnetic core, between metal terminal and installation base plate etc. weakens sometimes.
In addition, be fixed owing to being only coated with bonding agent between drum-shaped magnetic core and endless core, so when being subject to larger vibration effect, endless core also can depart from drum-shaped magnetic core sometimes.
In order to prevent endless core from coming off from drum-shaped magnetic core, in the front end of the fixed part 41 that metal terminal 40 has, be bent to form to the inside for the pawl of hooking in the 1st notch part 31 or the 2nd notch part 32.And, the installation portion 43 be connected with installation base plate is adhered to the large flange part 22 of the 1st magnetic core 20, the fixed part 41 of metal terminal 40 is formed to the height of the 1st notch part 31 or the 2nd notch part 32, and the 1st notch part 31 or the 2nd notch part 32 are formed at the 2nd magnetic core 30.Further, under the state that the 1st magnetic core 20 and the 2nd magnetic core 30 combine, fixed part 41 fixes the 2nd magnetic core 30.In addition, in order to prevent the distortion of metal terminal 40, the outer wall along the 1st magnetic core 20 and the 2nd magnetic core 30 forms scolding tin fillet forming portion 42.Scolding tin fillet forming portion 42, for when magnetic element 1 scolding tin is fixed on installation base plate, promotes to form scolding tin fillet between metal terminal and installation base plate.
Fig. 3 is end view and the stereogram of the 2nd magnetic core 30.Fig. 3 A is the end view of the 2nd magnetic core 30, and Fig. 3 B is the stereogram of the 2nd magnetic core 30.
Fig. 4 is structure chart when observing magnetic element 1 from the side.
As mentioned above, on the facing perisporium of the 2nd magnetic core 30, be formed with the 1st notch part 31 and the 2nd notch part 32 of inverted trapezoidal from the upper surface of perisporium towards installed surface.The bottom surface 33 of the 1st notch part 31 and the 2nd notch part 32 is smooth, and almost parallel with the plane of installation portion 43, between the upper surface 34 of the perisporium of bottom surface 33 and the 2nd magnetic core 30, be formed with inclined-plane 35.
In addition, immediately below the perisporium being formed with the 1st notch part 31 and the 2nd notch part 32 of the 2nd magnetic core 30, the Central places towards the 2nd magnetic core 30 is formed with recess 36.In addition, recess 36 side 37 be external in the square 24(of large flange part 22 when the 1st magnetic core 20 is combined in the 2nd magnetic core 30 with reference to Fig. 2) each limit be positioned at roughly same position.Thus, between the outer rim and the scolding tin fillet forming portion 42 of metal terminal 40 of recess 36 and large flange part 22, there is space 51 as shown in Figure 4.Equally, on the facing perisporium of the 2nd magnetic core 30, immediately below notch part 32, be formed with the side 37 identical with recess 36, between the outer rim and metal terminal 40 of side 37 and large flange part 22, also produce space 52.Width from the side 37 of the 2nd magnetic core 30 to the inner surface of scolding tin fillet forming portion 42 is preferably more than 0.2mm.
What space 51 had a periphery of the magnetropism element 1 to the bonding agent be injected between metal terminal 40 and the 1st magnetic core 20 oozes out the effect suppressed.In the operation utilizing bonding agent the 1st magnetic core 20 and the 2nd magnetic core 30 to be bonded to each other, the unnecessary bonding agent that the coating part of self bonding agent is oozed out flow in space 51.When bonding agent flow in space 51, unnecessary bonding agent no longer flows out to the outside of the 2nd magnetic core 30.Therefore, there is following effect, that is, suppress unnecessary bonding agent to cause the bad connection of metal terminal 40, or the bad generation that the poor attachment causing the 1st magnetic core 20 and the 2nd magnetic core 30 is such.
4 notch parts 38 are provided with, to pull out the end 11,12 of coil 10 along the lower surface of the 2nd magnetic core 30 in the corner of the bottom surface of the 2nd magnetic core 30.Pull out the end 11,12 of coil 10 freely through these notch parts 38 from the 2nd magnetic core 30.Further, according to the specification required by magnetic element 1, by the notch part selected from 4 notch parts 38 pull-out end 11,12,1/4 circle can be adjusted, the number of turn that 1/2 circle or 3/4 adjusts the wire of winding on coil 10 all over the ground at every turn.
Fig. 5 is stereogram and the end view of metal terminal 40.Fig. 5 A is the stereogram of metal terminal 40.Fig. 5 B is the end view of metal terminal 40.
Metal terminal 40 comprises the wound portion 44 that the fixed part 41 fixing the 2nd magnetic core 30, the scolding tin fillet forming portion 42 improving the adhesive strength when magnetic element 1 being installed on installation base plate, the installation portion 43 be connected with installed surface and the end 11,12 for coil 10 are wound around.The effect of winding terminal that metal terminal 40 has user's terminal concurrently and is wound around for the end 11,12 of coil 10.
Fixed part 41 extends to the bottom surface of the 1st notch part 31 and the 2nd notch part 32 from the upper surface that scolding tin round becomes portion 42 along the outermost outer peripheral face being positioned at the 2nd magnetic core 30.The front end of fixed part 41 is bent into hook-type to the inside, can the 1st notch part 31 of 2nd magnetic core 30 of hooking after combining with the 1st magnetic core 20 and the 2nd notch part 32, the invariant position ground of the 2nd magnetic core 30 when keeping the 2nd magnetic core 30 and the 1st magnetic core 20 to combine, is fixed to one another the 1st magnetic core 20 and the 2nd magnetic core 30.Magnetic element 1 entirety is fixed on installation base plate by scolding tin fillet forming portion 42 and installation portion 43.Thus, the 1st magnetic core 20 and the integration of the 2nd magnetic core 30, can withstand the impact of the intense vibration from installation base plate.
In order to promote to form scolding tin fillet between installation base plate and metal terminal 40, be provided with scolding tin fillet forming portion 42.And across space 51,52 between the perisporium of large flange part 22 and the end face of side 37, along the wall of most peripheral being positioned at the 2nd magnetic core 30, form scolding tin fillet forming portion 42 from the edge side of installation portion 43 and installed surface vertically towards internal bend.
When the setting area of scolding tin fillet forming portion 42 and installation base plate increases, the installed surface being coated with solder(ing) paste increases, and the adhesive strength between metal terminal 40 and installation base plate increases.As a result, magnetic element 1 is not easy to come off from installation base plate.In addition, form scolding tin fillet forming portion 42 by carrying out bending process to a part for metal terminal 40, handling ease is carried out, and arbitrarily can increase the area of scolding tin fillet forming portion 42.Therefore, it is possible to expect the raising of the vibration resistance of magnetic element 1 entirety.
In addition, when utilizing scolding tin fillet forming portion 42 that magnetic element 1 is installed in installation base plate, need not only be fixed with the solder(ing) paste be coated between installation portion 43 and installation base plate.That is, owing to being formed with scolding tin fillet between the outside and installation base plate of scolding tin fillet forming portion 42, so the bonding strength when metal terminal 40 being installed on installation base plate is higher.In addition, the width of scolding tin fillet forming portion 42 is larger, when being formed with scolding tin fillet to carry out the area of scolding tin to installation base plate larger, adhesive strength is also higher, and can also suppress the distortion of metal terminal 40.Therefore, the width of scolding tin fillet forming portion 42 is at least large than the width of fixed part 41.
In order to increase the width of scolding tin fillet forming portion 42, the distance between the end 45 of scolding tin fillet forming portion 42 and cut surface 46 is formed in below 0.5mm.Preferably this distance is below 0.35mm further.In addition, in order to suppress metal terminal 40 relative to the impact of the dislocation of the 1st magnetic core 20, being preferably designed to and making the bonding agent flowed out from the 2nd magnetic core 30 cross the upper end of scolding tin fillet forming portion 42 and escape into outside.
In addition, there is space 61,62(with reference to Fig. 5 B in metal terminal 40), when carrying out scolding tin process to wound portion 44, these spaces 61,62 prevent scolding tin from feeding through to scolding tin fillet forming portion 42.The root that these spaces 61,62 are present in wound portion 44 to the root of scolding tin fillet forming portion 42 front end between, collecting is from the bonding agent oozed out between the 1st magnetic core 20 and the 2nd magnetic core 30, between the 2nd magnetic core 30 and metal terminal 40, and these spaces 61,62 exist to prevent the end 11,12 be wrapped in wound portion 44 from broken string occurring.The width in this space 61 is preferably more than 0.5mm.
Installation portion 43 is formed in the plane substantially vertical with the axis direction of spool 23 with tabular, and the lower surface of installation portion 43 is coated with the conductivity adhesivess such as solder(ing) paste, thus can be connected with installation base plate.In addition, be coated with the insulating properties bonding agents such as resin at the upper surface of installation portion 43, thus can engage with the lower surface of large flange part 22.
Like this, by the 2nd magnetic core 30 being arranged on the large flange part 22 of the 1st magnetic core 20, make the overall integration of coil groups comprising the 1st magnetic core 20 and the 2nd magnetic core 30.In addition, metal terminal 40 can fix the 1st magnetic core 20 and the 2nd magnetic core 30.Therefore, it is possible to improve the vibration resistance of magnetic element 1 entirety, and the mutual bonding strength of the 1st magnetic core 20, the 2nd magnetic core 30 and metal terminal 40 can be improved.
Next, the manufacturing process of magnetic element 1 is described.
First, the 1st magnetic core 20 and the combination of the 2nd magnetic core 30 that are wound with wire are bonded together.Then, the 1st magnetic core 20 after combination and the 2nd magnetic core 30 are adhered to metal terminal 40.
Then, the end 11,12 of coil 10 is wrapped in wound portion 44 towards outside each other.Further, wound portion 44 scolding tin being wound with end 11,12 is engaged, makes magnetic element 1.
Adopt the magnetic element 1 of the 1st execution mode described above, after the 1st magnetic core 20 and the 2nd magnetic core 30 combine, 2nd magnetic core 30 is adhered to metal terminal 40, utilize fixed part 41 that the 2nd magnetic core 30 is fixed on metal terminal 40 further, thus strongly can be fixed for each part forming magnetic element 1.Therefore, even if be applied with mechanical oscillation to the magnetic element 1 being installed on installation base plate, magnetic element 1 is also not easy to decompose.In addition, due to the front end of the bending of the fixed part 41 by metal terminal 40, bonding agent is utilized to be adhered to these notch parts 31,32, so constant intensity can be improved further matchingly with the notch part 31,32 be previously formed in the 2nd magnetic core 30.
In addition, between the side 37 of the 2nd magnetic core 30 and scolding tin fillet forming portion 42, there is space 51,52, thus flow into unnecessary bonding agent in the bonding agent in the 1st magnetic core 20 and flow in space 51,52.Therefore, it is possible to prevent bonding agent from flowing out to the outside of magnetic element 1.
In addition, the 2nd magnetic core 30 is formed with 4 notch parts 38, pulls out the end 11,12 of coil 10 from these notch parts 38.Therefore, it is possible to each adjustment 1/4 circle, 1/2 circle and 3/4 adjust the number of turn of coil 10 all over the ground, the number of turn of coil 10 is easily made to meet the purposes of magnetic element 1.
In addition, by being provided with scolding tin fillet forming portion 42 on metal terminal 40, installation portion 43 is not easily bending to the direction vertical with the bending direction of scolding tin fillet forming portion 42.In addition, because installation portion 43 has larger area, so the area contacted with installation base plate is larger.In addition, utilize scolding tin fillet forming portion 42 to be easy to form scolding tin fillet when metal terminal 40 is connected with installation base plate, improve the bonding strength to installation base plate of metal terminal 40 further.In addition, metal terminal 40 is made up of 2 parts of symmetry, is separated from each other, thus fully insulate and prevent short circuit.
2. the 2nd execution mode
Next, the structure of the magnetic element 70 of the 2nd execution mode of the present invention is described.In the present embodiment, coil 10 is used as hollow coil.
Fig. 6 is the stereogram of the structure example representing magnetic element 70.
Magnetic element 70 comprises coil 10, the 1st magnetic core 71, the 2nd magnetic core 72 and metal terminal the 74,1st magnetic core 71 and is box like and recording quantity, and the 2nd magnetic core 72 is tabular and is embedded in the one side of opening wide of the 1st magnetic core 71.In addition, the metal terminal 74 of magnetic element 70 installation portion 77 that comprises the fixed part 73 fixing the 2nd magnetic core 72, the scolding tin fillet forming portion 75 improving the adhesive strength when magnetic element 70 being adhered to installation base plate and be connected with installation base plate.Further, the metal terminal 74 being formed with wound portion is wound with the end being certainly accommodated in the coil in the 1st magnetic core 71 and extending out, the two ends of this wound portion fixed coil 10.
Here the position being equivalent to the wound portion 44 of above-mentioned 1st execution mode is integrated with fixed part 73.That is, the recess 76 be wound around for the end of coil is formed on fixed part 73.Adopt this structure, the 1st magnetic core 71 is integrated with the 2nd magnetic core 72 one-tenth, can withstand intense vibration.In addition, owing to utilizing scolding tin fillet forming portion 75 to increase scolding tin fillet area, so the effect that the bonding strength between magnetic element 70 and installation base plate is also improved can be expected.
In addition, the present invention is not limited to above-mentioned execution mode, only otherwise depart from the purport of the present invention described in claims of authorizing invention, certainly can obtain other various application examples and variation.
description of reference numerals
1, magnetic element; 10, coil; 20, the 1st magnetic core; 21, little flange part; 22, large flange part; 23, spool; 30, the 2nd magnetic core; 31, the 1st notch part; 32, the 2nd notch part; 38, notch part; 40, metal terminal; 41, fixed part; 42, scolding tin fillet forming portion; 43, installation portion; 44, wound portion; 70, magnetic element.
Claims (7)
1. a magnetic element,
This magnetic element comprises:
1st magnetic core, it has with the coil of regulation number of turns winding;
2nd magnetic core, it has above-mentioned coil in inside, combines along the periphery of above-mentioned 1st magnetic core and the 1st magnetic core;
Metal terminal, it connects above-mentioned coil and installation base plate,
Above-mentioned metal terminal has fixed part, and under the state that above-mentioned 1st magnetic core and above-mentioned 2nd magnetic core combine, this fixed part fixes above-mentioned 2nd magnetic core,
Above-mentioned metal terminal also has:
Installation portion, it is connected with installation base plate;
Scolding tin fillet forming portion, its outer wall along above-mentioned 1st magnetic core and above-mentioned 2nd magnetic core is formed, and promotes to form scolding tin fillet between above-mentioned metal terminal and above-mentioned installation base plate,
Recess is formed with towards the Central places of above-mentioned 2nd magnetic core at the position corresponding with above-mentioned scolding tin fillet forming portion of the outer wall of above-mentioned 2nd magnetic core.
2. magnetic element according to claim 1, wherein,
Above-mentioned 1st magnetic core comprises: spool, and it is for the above-mentioned coil that reels; 1st flange part and the 2nd flange part, they are located at the two ends of said reel respectively, and diameter is unequal,
Above-mentioned 2nd magnetic core is formed as the ring-type around above-mentioned 1st magnetic core, and under the state that the said reel above-mentioned 1st magnetic core had is inserted in the 2nd magnetic core, the 2nd magnetic core is placed in above-mentioned 1st flange part,
The above-mentioned installation portion of above-mentioned metal terminal is adhered to above-mentioned 1st flange part of above-mentioned 1st magnetic core, and the fixation portions of above-mentioned metal terminal is formed to the height residing for notch part of above-mentioned 2nd magnetic core.
3. magnetic element according to claim 1, wherein,
The notch part of above-mentioned 2nd magnetic core of front end hooking after combining with above-mentioned 1st magnetic core of fixation portions, the position of above-mentioned 2nd magnetic core when fixation portions keeps above-mentioned 2nd magnetic core and above-mentioned 1st magnetic core to combine.
4. magnetic element according to claim 1, wherein,
Above-mentioned metal terminal has the wound portion that the two ends for above-mentioned coil are wound around.
5. magnetic element according to claim 1, is characterized in that,
Above-mentioned metal terminal has the wound portion that the two ends for above-mentioned coil are wound around;
The space of more than 0.5mm is formed between the root and the root of above-mentioned scolding tin fillet forming portion of above-mentioned wound portion.
6. magnetic element according to claim 1, wherein,
Above-mentioned coil is air core coil,
Above-mentioned 1st magnetic core is formed as the box-shaped of receiving above-mentioned coil and recording quantity,
Above-mentioned 2nd magnetic core is formed as the cap of the above-mentioned one side of opening wide of closed above-mentioned 1st magnetic core,
The above-mentioned metal terminal being formed with wound portion is wound with the end extended out from the above-mentioned coil be accommodated in above-mentioned 1st magnetic core, and this wound portion fixes the two ends of above-mentioned coil.
7. magnetic element according to claim 2, wherein,
Space is formed between the recess and above-mentioned metal terminal of above-mentioned 2nd magnetic core and between the outer rim of above-mentioned 1st flange part and above-mentioned metal terminal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-004307 | 2011-07-25 | ||
| JP2011004307 | 2011-07-25 |
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| Publication Number | Publication Date |
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| CN102903492A CN102903492A (en) | 2013-01-30 |
| CN102903492B true CN102903492B (en) | 2015-08-26 |
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| CN201210260612.5A Active CN102903492B (en) | 2011-07-25 | 2012-07-25 | Magnetic element |
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| US9136050B2 (en) * | 2010-07-23 | 2015-09-15 | Cyntec Co., Ltd. | Magnetic device and method of manufacturing the same |
| CN105101635B (en) * | 2014-05-08 | 2018-09-28 | 鸿磬电子（东莞）有限公司 | The inductance element of slimming is embedded to structure |
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| JP2001196239A (en) * | 2000-01-13 | 2001-07-19 | Tdk Corp | Low chip type coil element |
| JP4512420B2 (en) * | 2004-05-28 | 2010-07-28 | スミダコーポレーション株式会社 | Inductor |
| JP4676822B2 (en) * | 2005-06-21 | 2011-04-27 | スミダコーポレーション株式会社 | Coil parts |
| JP4810167B2 (en) * | 2005-09-12 | 2011-11-09 | スミダコーポレーション株式会社 | Inductor |
| JP4781223B2 (en) * | 2005-12-22 | 2011-09-28 | スミダコーポレーション株式会社 | Inductance element |
| JP5022441B2 (en) * | 2007-09-10 | 2012-09-12 | スミダコーポレーション株式会社 | Magnetic parts |
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