KR101044608B1 - Process for molding composite inductors - Google Patents

Process for molding composite inductors Download PDF

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Publication number
KR101044608B1
KR101044608B1 KR1020090047757A KR20090047757A KR101044608B1 KR 101044608 B1 KR101044608 B1 KR 101044608B1 KR 1020090047757 A KR1020090047757 A KR 1020090047757A KR 20090047757 A KR20090047757 A KR 20090047757A KR 101044608 B1 KR101044608 B1 KR 101044608B1
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South Korea
Prior art keywords
terminal piece
pallet
coil
electrical terminal
inductor
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KR1020090047757A
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Korean (ko)
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KR20100129025A (en
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오세종
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오세종
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Abstract

-A plurality of electrical terminal piece accommodating grooves 11 , which are engraved on the surface so as to conform to the shape of the electrical terminal piece, are provided in plural, and the electrical terminal piece is connected to the electric heating means 10 ' on the rear surface thereof. A first step of automatically storing and aligning the electrical terminal pieces 13 introduced thereon while vibrating the storage pallet 10 on the vibrating device in the electrical terminal piece receiving grooves 11 ,
-Pallet for aligning a core ( 20 ), wherein a plurality of air core coil insertion holes ( 21 ) are provided on the surface of the position corresponding to the position of the two (one) pair of electrical terminal piece receiving grooves ( 11 ). A second step of putting the lead cores 23 , both of which lead wires are soldered, onto the surface of the coils while automatically vibrating on the vibrating device, and automatically inserting and aligning the coil inserting holes 21 ,
- and a third step of the first process on the terminal piece pallet (10) for receiving the stacked air-core coil arranged for pallets (20) of the second step registration (整合) of,
- lead wire (23a, 23b) the electrical terminal piece 13 in the terminal side storage for pallets (10) to the air-core coil 23 is heated above the solder melting temperature through the heating means 10 'of the back surface 4 to separate the plurality of coil-terminal piece assemblies 31 from the coil alignment pallet 20 by attaching adhesive paper to the back surface of the terminal piece from which the electrical terminal pallet 10 is removed after the welding. Fair,
-Shaped body including a plurality of Composite inductor at a time to the press-molding with a terminal piece assembly of the metal magnetic powder 31 is put moved on as the inductor forming die (62) attached on whether adhesive (- a plurality of coils in a fourth step 67 ) the fifth step of forming,
- a sixth step that, cut and separate the individual Composite inductor (CI) from the fifth process, molded body (67) comprising a plurality of molding Composite inductor
A method of molding a plurality of composite inductors at a time is described.
Composite Inductor

Description

Forming method of composite inductor {PROCESS FOR MOLDING COMPOSITE INDUCTORS}

The present invention relates to a method for forming a composite inductor, and more particularly, to a molding method capable of automatically mass production of a composite inductor at one time.

The simplest and most representative method for forming a composite inductor including elements such as electric terminals known to date is, for example, according to the process sequence schematically shown in FIGS. 1 (a) to 1 (d). The method can be illustrated. The concept of this conventional method is outlined according to FIG. 1 as follows.

In the conventional method, the main body part 2 in which the hollow part 1 is provided, the base part 3 detachably joined to the bottom face of this main body part 2 , and an air core coil Mold consisting of an element molding portion 4 which is provided with two coil insertion holes 4a and 4b for inserting an air-cored coil lead wire and is detachably installed in the hollow portion 11 . )] M is used. Accordingly, in carrying out this method, the coil lead wires 5a and 5b inserted into the insertion holes 4a and 4b are inserted to set the coil element 5 in position, and then [Fig. 1]. (A)] First, a predetermined amount of magnetic material, i.e., metal magnetic powder, is added thereto and vibrated appropriately to form a predetermined powder layer 6 [Fig. 1 (b)], followed by mold M. A predetermined pressure is applied from the pressurizing device P (for example, an air press or a hydraulic press) installed in the upper portion so that the metal magnetic powder is integrally molded by pressing [FIG. 1 (C)]. When the coil lead wires 5a and 5b are cut to a suitable length according to the design and subjected to necessary processing such as terminal welding, a completed inductor I is formed (Fig. 1 (d)). That is, although not shown further, each of the coil lead wires 5a and 5b is further processed so as to be bonded to the electrical terminals Ta and Tb by using a suitable known welding method such as a resistance spot method by removing the film by appropriate means, respectively. Then, the inductor I is shipped to the product through a heat treatment or the like (Korean Patent No. 663241).

However, in the conventional method described above, since the entire process of Figs. 1 (a) to 1 (d) is performed by hand, the operator not only requires a high level of skill, but also a long process time and homogeneity of each product. Drawbacks have been pointed out that it is difficult to achieve a quality. Therefore, in this technical field, the emergence of the method of eliminating the shortcomings of the said conventional method, and at the same time obtaining a several composite inductor with homogeneous quality is anticipated for a long time.

Accordingly, an object of the present invention is to provide a reliable, simple and novel molding method capable of mass production of a composite inductor in a homogeneous quality at one time.

      The present inventors have been able to reach the present invention as a result of long-term diligence in order to actively meet the existing demands of this technical field. Accordingly, the technical problem to be solved by the present invention,

-On the surface, a plurality of pairs of electrical terminal piece accommodating grooves engraved in accordance with the shape of the electrical terminal pieces are provided, and an electrical terminal piece accommodating pallet connected to the electric heating means is provided on the vibrator. A first step of automatically storing and aligning predetermined electrical terminal pieces inserted thereon while vibrating in the respective electrical terminal piece receiving grooves;

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-An oscillating coil alignment pallet having a plurality of air core coil insertion holes provided on the surface corresponding to the position of the two sets of pairs of electrical terminal pieces receiving grooves on both sides thereof by vibrating on the vibrating device A second step in which lead wires are put in soldered co-core coils and automatically inserted and aligned in the respective coil feeding holes;

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- and a third step of the first stacked pallets for the air-core coil arranged in the second step registration (整合) over a pallet for accommodating the terminal pieces of the first step,

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-The terminal piece accommodating pallet is heated to a solder melting temperature or higher through a heating means on the back side thereof to weld the electric terminal piece to the lead wire of the air core coil, and then the adhesive paper is attached to the back surface of the terminal piece from which the electric terminal pallet is removed. A fourth step of separating the plurality of coil-terminal piece assemblies from the coil alignment pallet;

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- a plurality of coils in a fourth step - a fifth step of forming a molded article comprising a plurality of Composite inductor at a time to the press-molding with a terminal piece assembly of the metal magnetic powder is put in moving the AS attached on whether the adhesive in the inductor forming die and ,

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And a sixth step of cutting and separating the individual composite inductors from the molded body including the plurality of composite inductors formed in the fifth step. Can be achieved.

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According to the present invention, a composite inductor having a uniformly improved quality can be obtained easily and in large quantities at one time and in comparison with the conventional method of forming a composite inductor of which quality is generally heterogeneous, which must be molded by hand by hand. The effect can be obtained.

       Hereinafter, the method of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2A is a perspective view of an electrical terminal piece alignment pallet (hereinafter simply referred to as a "terminal pallet") 10 for carrying out the present invention. The pallet 10 for terminals is preferably made of ordinary copper or bronze plates. FIG. 2 (b) is a partial cross-sectional view taken along the line AA of FIG. 2 (a). As shown in these figures, two pairs (pair) of terminal piece accommodating grooves 11 and 11 required are engraved into a rectangular parallelepiped shape on the upper surface of the pallet 10 for terminals. In the example shown in FIG. 2 (a) and FIG. 2 (b), since four sets (four pairs) of terminal piece accommodation grooves 11 are provided in the width and length of the surface of the terminal pallet 10 , 16 as a whole, 16 pairs of terminal piece accommodating grooves 11 are arranged. Since the size of each terminal piece accommodating groove 11 , i.e., width x length x height, depends on the size of the final product, it cannot be defined uniformly. In the two sets of storage grooves 11 and 11 shown , the spacing between these sets of storage grooves also depends on the specifications of the final product, including the specifications of the air core coil described later. In addition, in the illustrated example, the plane consisting of two sets (one pair) of the receiving grooves 11 , 11 is represented by a square, but this is not an essential requirement of the present invention, depending on the type of product required Can vary. Reference numeral 12 is a fastening pin hole used for fastening with an air core coil alignment pallet which will be described later.

The terminal pallet 10 is actually used by mounting on a conventional diaphragm not shown. That is, the terminal pallet 10 is properly coupled onto an existing vibration device (not shown), and then, while the vibration device is operated, an electric terminal piece 13 of a predetermined amount (described later) of an appropriate amount is placed on the surface of the terminal pallet 10 . When supplied, these each terminal piece 13 according to the vibration action is to be automatically sorted and stored into each terminal receiving groove part 11 of the pallet 10 for terminal. The electrical terminal piece 13 is preferably made of a tin plated phosphor bronze plate. The size of the electrical terminal piece 13 generally corresponds to the size of the storage groove 11 , but the thickness thereof is slightly smaller than the depth of the storage groove 11 so as to project slightly higher than the surface of the terminal pallet 10 as shown in FIG. Thickening is convenient for carrying out the present invention. The thickness is preferably about 1.1 to 1.2 times the depth of the receiving groove 11 , but is not essential and can be varied as appropriate. Extra terminal pieces which are not housed in the entire terminal piece receiving groove 11 are removed from the surface of the pallet 10 for terminals in a suitable manner. This is similar to the principle of using a graticule provided with a coin receiving groove of a corresponding size, for example, to simply weigh the amount of coins in a bank. (The above is called " the 1st process .")

The terminal pallet 10 may be combined with an electric heating means 10 ′ , such as an electric heater capable of heating up to about 300 ° C. to about 300 ° C. so as to be heated. Since the connection with the heater can be selected in various ways according to those skilled in the art, the specific configuration example is omitted here.

3 is a perspective view of an air core coil alignment pallet (hereinafter simply referred to as a "coil pallet") 20 for carrying out the present invention. This coil pallet 20 is also preferably made of the same material (copper plate or bronze plate) as the terminal pallet 10 . 3B is a partial cross-sectional view taken along line BB of FIG. 3A. As can be seen from these figures, a cylindrical coil inlet 21 for accommodating the air core coil 23 described later is provided on the surface of the coil pallet 20 . The size (diameter, depth, etc.) of the coil insertion hole 21 depends on the size of the air core coil 23 to be used. Each of these coil insertion holes 21 is exactly 1: 1 in the configuration position of the terminal piece receiving grooves of Figs. 2 (a) and (b), that is, the configuration positions of the two sets of terminal piece receiving grooves 11 and 11 , respectively. It is prepared to respond. Further, reference numeral 22 denotes a fastening pin corresponding to the fastening pin hole 12 provided in the terminal pallet 10 described above.

If the coil pallet 20 is also connected to a normal vibration device (not shown) like the terminal pallet 10 , then an appropriate number of air core coils 23 are put on the surface of the coil pallet 20 while driving the vibration device. These air core coils 23 are automatically charged and aligned in each coil insertion hole 21 by vibration. The extra air core coils 23 are also removed from the surface of the pallet 10 for coils by suitable means. As shown in FIG. 3 (b), the coil insertion hole 21 has a depth that can freely receive the air core coil 23. Coil lead wires 23a (23b) and 23b (23a ) Coil lead wire supporting grooves 21a (21b) and 21b (21a) are respectively provided. The depth of each of the coil lead wire support grooves 21a and 21b is such that the coil lead wires 23a and 23b slightly protrude from the surface of the coil pallet 20 , as shown in Fig. 3 (C), which is the size of the coil to be used. Depends on. The cross section in which the air core coil 23 is inserted and aligned in the coil insertion hole 21 is schematically shown in FIG. (The above is called " second process .")

By the way, as shown by S in FIG.3 (C), the suitable solder is previously joined to the upper surface of each lead wire 23a and 23b of the said air core coil 23 to a fixed thickness.

As described above, after the electric terminal pieces 13 are respectively stored and aligned in the terminal piece accommodation grooves 11 of the pallet for terminals 10 , and the air core coils 23 are respectively inserted and aligned in the coil insertion holes 21 of the pallet 20 for the air core coils, As shown in FIG. 4, the fastening pins 22 of the coil pallet 20 are matched with the fastening pin holes 12 of the pallet 10 for the terminal, and are fastened to each other. (The above is called " third process .")

During the third process, as described above, each of the terminal pieces 13 is heated by suitable heating means (for example, 10 ' ) coupled to the terminal pallet 10 . Delivered and heated to a predetermined temperature. The heating temperature is preferably at least the melting temperature of the solder, that is, about 280 ° C to 300 ° C, and the heating time is about 1 to 5 seconds in the above temperature range. In this way, by the heat transmitted to the terminal piece 13 placed in the terminal piece receiving groove 11 of the terminal pallet 10 , the solder S joined to the lead wires 23a and 23b of the air core coil 23 of the coil pallet 20 in contact therewith Since heat is transferred and melted, each terminal piece 13 can be welded to the coil lead wires 23a and 23b , respectively. Subsequently, when the terminal pallet 10 and the coil pallet 20 are cooled, the terminal pallet 10 is removed, and then the adhesive paper is attached to the terminal rear surface of the coil-terminal piece assembly 31 held in the coil insertion hole 21 of the coil pallet 20 . 30 is attached to separate the coil-terminal piece assembly 31 from the coil pallet 20 . (The above is called " fourth process .")

The state of the individual coil-terminal piece assembly 31 bonded to the adhesive paper 30 separated in this manner is shown as a perspective view in FIG. Subsequently, for example, the edge of the adhesive paper 30 is cut out in accordance with the dashed-dotted line PP and QQ in FIG. 5 to prepare for the next step. (Sometimes, you may not want to perform a border cut, if necessary.)

The coil-terminal piece assemblies 31 attached on the adhesive paper 30 are transferred to the appropriate molding die 62 as shown in FIG. Here, reference numeral 63 is a detachable base for detachment of the mold 62 . Subsequently, as shown in FIG. 6 (b), a metal magnetic powder layer 66 is formed by applying a predetermined amount of magnetic metal powder to the hollow part of the mold 62 according to a conventional method, and then press-molding with pressing means P. Demonstration gives a molded body 67 including 16 (= 4 × 4) composite inductors according to the illustrated example. 6 (C) and 6 (D) are schematic diagrams of a cross-sectional view and a bottom view of the resulting molded body 67 , respectively. (The above is called " the 5th process .")

An individual product from the molded product 67, i.e., the individual composite in order to obtain done inductor (CI), an appropriate cutting means for each cut line on the molded article 67 for example, FIG (d) is also a horizontal and vertical illustrated by a chain line direction Cut and remove. (The above is called " the 6th process "),

For example, in the above example, a total of 16 individual composite inductors CI are formed at one time. An example of one composite inductor CI cut and separated is shown enlarged in the dashed-dotted line source of FIG. 6 (D).

As already pointed out at the outset, this final composite inductor CI may vary in size and shape depending on the various specifications required for the electrical or electronic device to be used, and thus, the above-described terminal pallet 10 and It will be apparent to one skilled in the art that the design form of the pallet 20 for coils will vary accordingly. Furthermore, in the method of the present invention, the above-described first step and the second step may be performed in reverse order.

In the above description, a case in which a molded article including a total of 16 (= 4 × 4) composite inductors is obtained by one molding operation has been described. It is also possible to obtain a molded body comprising at least two or more tens or hundreds of composite inductors. for example. When the pair of the terminal piece accommodating grooves 11 and the coil insertion holes 21 are provided 10 each in the width and length, 100 composite inductors can be obtained at one time.

Thus, according to the present invention,

-A plurality of electrical terminal piece accommodating grooves 11 , which are engraved on the surface so as to conform to the shape of the electrical terminal piece, are provided in plural, and the electrical terminal piece is connected to the electric heating means 10 ' on the rear surface thereof. A first step of automatically storing and aligning the predetermined electrical terminal pieces 13 introduced thereon while vibrating the storage pallet 10 on the vibrating device in the electrical terminal piece receiving grooves 11 ,

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-Pallet for aligning a core ( 20 ), wherein a plurality of air core coil insertion holes ( 21 ) are provided on the surface of the position corresponding to the position of the two (one) pair of electrical terminal piece receiving grooves ( 11 ). A second step of putting the lead cores 23 , both of which lead wires are soldered, onto the surface of the coils while automatically vibrating on the vibrating device, and automatically inserting and aligning the coil inserting holes 21 ,

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- and a third step of the first process on the terminal piece pallet (10) for receiving the stacked air-core coil arranged for pallets (20) of the second step registration (整合) of,

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- lead wire (23a, 23b) the electrical terminal piece 13 in the terminal side storage for pallets (10) to the air-core coil 23 is heated above the solder melting temperature through the heating means 10 'of the back surface 4 to separate the plurality of coil-terminal piece assemblies 31 from the coil alignment pallet 20 by attaching adhesive paper to the back surface of the terminal piece from which the electrical terminal pallet 10 is removed after the welding. Fair,

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- a plurality of coils in a fourth step-terminal side assembly 31 is put in moving the AS attached on whether the adhesive in the inductor forming die 62 pohamneun a plurality of Composite inductor at a time to the press-molding with a metal magnetic powder molded body (67 5th process of molding),

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- by using the molding method comprising a sixth step that, cut and separate the individual Composite inductor (CI) from the mold (67) comprising a forming a plurality of Composite inductor in a fifth step, the quality of a homogeneous Along the way, composite inductors can be easily molded in large quantities.

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By using the method of the present invention in related industries, it is possible to mass produce a plurality of composite inductors in a uniform quality at a time, so that goals such as eliminating a large number of manpower and reducing product cost can be easily achieved.

1 (a) to (d) are schematic diagrams of a molding process of a conventional composite inductor which is molded every product.

Figure 2 (a) is a perspective view of an electrical terminal piece alignment pallet according to the present invention, Figure 2 (b) is a cross-sectional view taken along the line AA of Figure 2 (a), the principle that the electrical terminal piece is accommodated in the electrical terminal piece receiving groove FIG.2 (C) is sectional drawing which showed the state in which the electrical terminal piece was accommodated and aligned in two pairs (pair) of electrical terminal accommodation grooves.

Figure 3 (a) is a perspective view of an air core coil alignment pallet according to the present invention, Figure 3 (b) is a cross-sectional view taken along the line BB of Figure 3 (a), the principle that the air core coil is inserted and stored in the air core coil receiving hole 3 (C) is a cross-sectional view of a state where the air core coil is stored and aligned in the air core coil accommodation hole.

Figure 4 is a view showing the principle of mutual coupling of the pallet for electrical terminal piece alignment of the present invention and the pallet for air core coil alignment of the present invention.

Fig. 5 is a perspective view of a state in which a plurality of air core coil-electronic terminal piece assemblies, to which an electric terminal piece is joined, is bonded to an adhesive sheet and separated from the air core coil alignment pallet according to the present invention.

6 (a) to (c) are diagrams showing the principle of forming a plurality of composite inductors at a time by transferring a plurality of air core coil-electric terminal piece assemblies according to the present invention to an inductor molding die [for example, FIG. (B) to (d)], and FIG. 6 (d) is a view for explaining the principle of separating individual composite inductors from a molded body including a plurality of composite inductors formed as described above. .

DESCRIPTION OF THE RELATED ART [0002]

10: Electric terminal piece storage pallet

11: electrical terminal compartment

13: electrical terminal piece

20: Pallet for Air Core Coil Alignment

21: hollow core insert hole

23: air core coil

CI: Composite Inductor

Claims (8)

  1. -A plurality of electrical terminal piece accommodating grooves 11 , which are engraved on the surface so as to conform to the shape of the electrical terminal piece, are provided in plural, and the electrical terminal piece is connected to the electric heating means 10 ' on the rear surface thereof. A first step of automatically storing and aligning the electrical terminal pieces 13 introduced thereon while vibrating the storage pallet 10 on a vibrating device in each electrical terminal piece receiving groove 11 ;
    -Pallet for aligning a core ( 20 ), wherein a plurality of air core coil insertion holes ( 21 ) are provided on the surface of the position corresponding to the position of the two (one) pair of electrical terminal piece receiving grooves ( 11 ). A second step of automatically introducing and aligning the air core coils 23 on which both lead wires are soldered onto the respective coil insertion holes 21 while vibrating the vibration device on the vibrating device,
    - and a third step of the first process on the terminal piece pallet (10) for receiving the stacked air-core coil arranged for pallets (20) of the second step registration (整合) of,
    - lead wire (23a, 23b) the electrical terminal piece 13 in the terminal side storage for pallets (10) to the air-core coil 23 is heated above the solder melting temperature through the heating means 10 'of the back surface 4 to separate the plurality of coil-terminal piece assemblies 31 from the coil alignment pallet 20 by attaching adhesive paper to the back surface of the terminal piece from which the electrical terminal pallet 10 is removed after the welding. Fair,
    -Shaped body including a plurality of Composite inductor at a time to the press-molding with a terminal piece assembly of the metal magnetic powder 31 is put moved on as the inductor forming die (62) attached on whether adhesive (- a plurality of coils in a fourth step 67 ) the fifth step of forming,
    - a sixth step that, cut and separate the individual Composite inductor (CI) from the fifth process, molded body (67) comprising a plurality of molding Composite inductor
    Forming method of a composite inductor comprising a.
  2. The method for forming a composite inductor according to claim 1, wherein the electrical terminal piece accommodation pallet ( 10 ) and the coil alignment pallet ( 20 ) are each made of a copper plate or a bronze plate material.
  3. The method of forming a composite inductor according to claim 1, wherein the electrical terminal piece ( 13 ) is made of a tin plated phosphor bronze plate.
  4.      The method of claim 1, wherein the heating in the fourth process is performed at 280 ° C. to 300 ° C. for 1 to 5 seconds.
  5.       The method for forming a composite inductor according to claim 1, wherein the number of inductors formed in one molding operation is two or more.
  6.      The method of claim 1, wherein the first process and the second process may be performed in a reversed order.
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  8.       A composite inductor obtained by molding by the method according to any one of claims 1 to 6.
KR1020090047757A 2009-05-29 2009-05-29 Process for molding composite inductors KR101044608B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020090047757A KR101044608B1 (en) 2009-05-29 2009-05-29 Process for molding composite inductors

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR1020090047757A KR101044608B1 (en) 2009-05-29 2009-05-29 Process for molding composite inductors
TW98138402A TWI404088B (en) 2009-05-29 2009-11-12 Novel process for molding composite inductors
JP2009263061A JP4950268B2 (en) 2009-05-29 2009-11-18 New molding method for composite inductors
CN2009102249982A CN101901683B (en) 2009-05-29 2009-11-26 Process for shaping composite inductors
HK11104211.2A HK1150187A1 (en) 2009-05-29 2011-04-27 Process for molding composite inductors

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Publication Number Publication Date
KR20100129025A KR20100129025A (en) 2010-12-08
KR101044608B1 true KR101044608B1 (en) 2011-06-29

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JP (1) JP4950268B2 (en)
KR (1) KR101044608B1 (en)
CN (1) CN101901683B (en)
HK (1) HK1150187A1 (en)
TW (1) TWI404088B (en)

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DE102014207635A1 (en) 2014-04-23 2015-10-29 Würth Elektronik eiSos Gmbh & Co. KG Method for producing an induction component and induction component
DE102014207636A1 (en) 2014-04-23 2015-10-29 Würth Elektronik eiSos Gmbh & Co. KG Method for producing an induction component and induction component
WO2015162016A1 (en) * 2014-04-23 2015-10-29 Würth Elektronik eiSos Gmbh & Co. KG Method for producing an induction component, and induction component
KR20160136416A (en) * 2014-04-23 2016-11-29 뷔르트 엘렉트로닉 아이조스 게엠베하 운트 콤파니 카게 Method for producing an induction component and an induction component
TWI594278B (en) * 2014-04-23 2017-08-01 伍斯艾索電子有限公司及合資公司 Method of producing an induction component
US9761373B2 (en) 2014-04-23 2017-09-12 Würth Elektronik eiSos Gmbh & Co. KG Method for producing an induction component and an induction component
KR101873673B1 (en) * 2014-04-23 2018-07-02 뷔르트 엘렉트로닉 아이조스 게엠베하 운트 콤파니 카게 Method for producing an induction component, and induction component
RU2660915C2 (en) * 2014-04-23 2018-07-11 Вюрт Электроник Айзос Гмбх Унд Ко. Кг Method for producing induction component, and induction component
KR101867204B1 (en) * 2014-04-23 2018-07-17 뷔르트 엘렉트로닉 아이조스 게엠베하 운트 콤파니 카게 Method for producing an induction component and an induction component
US10319519B2 (en) 2014-04-23 2019-06-11 Würth Elektronik eiSos Gmbh & Co. KG Method for producing an induction component

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TW201042676A (en) 2010-12-01
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KR20100129025A (en) 2010-12-08
CN101901683A (en) 2010-12-01
TWI404088B (en) 2013-08-01
HK1150187A1 (en) 2011-11-04
JP4950268B2 (en) 2012-06-13

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