CN114631159A - Two-row flat coil component for transformer and manufacturing method of flat coil component for transformer - Google Patents
Two-row flat coil component for transformer and manufacturing method of flat coil component for transformer Download PDFInfo
- Publication number
- CN114631159A CN114631159A CN201980101747.7A CN201980101747A CN114631159A CN 114631159 A CN114631159 A CN 114631159A CN 201980101747 A CN201980101747 A CN 201980101747A CN 114631159 A CN114631159 A CN 114631159A
- Authority
- CN
- China
- Prior art keywords
- flat coil
- coil
- flat
- transformer
- spiral pattern
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000001746 injection moulding Methods 0.000 claims description 35
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 238000000465 moulding Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 14
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims 2
- 238000004080 punching Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/061—Winding flat conductive wires or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention relates to a two-row flat coil component for a transformer and a manufacturing method of a flat coil element for the transformer, and the two-row flat coil component for the transformer is characterized by comprising the following steps: an upper plate coil (100) in a helical pattern; a lower plate coil (200) in a helical pattern; and a center locator (300) for connecting the outermost peripheral spiral pattern portion (113) on the opposite side of the terminals (111, 112) of the upper flat coil (100) and the outermost peripheral spiral pattern portion (213) on the opposite side of the terminals (211, 212) of the lower flat coil (200) to constitute the center in the longitudinal direction of the upper flat coil (100) and the lower flat coil (200).
Description
Technical Field
The present invention relates to a transformer for a charger of a communication terminal.
Background
Generally, a transformer (transformer) has a primary side (primary) and a secondary side (secondary), and generally, the primary side serves as an input and the secondary side serves as an output.
Among the transformers, a small transformer used for a mobile phone charger and the like uses a coil member (particularly, used as a secondary side) wound with a triple insulated wire.
However, the coil component wound with the triple insulated wire has the following problems: since the outer covering of the electric wire needs to be directly peeled off manually, mass production is difficult, and since the triple insulated wires cannot be uniformly wound, the defective rate is high. Further, if a coil component wound with triple insulated wires is used as the secondary side of the small transformer, the primary side and the secondary side of the small transformer need to be spaced apart by a predetermined interval to ensure a sufficient insulation voltage resistance, so that the size of the small transformer increases, and the leakage inductance (leakage inductance) of the small transformer increases.
In addition, in the present situation where high-speed charging of a mobile phone or the like requires an increase in the output of the small transformer, if the coil component wound with the triple insulated wires is used as the secondary side of the small transformer, the primary side and the secondary side of the small transformer need to be separated further than in the related art to ensure a sufficient dielectric strength between the primary side and the secondary side, and therefore the size of the small transformer is further increased, and the leakage inductance is also further increased. Further, as the distance between the primary side and the secondary side increases, the efficiency of the small transformer decreases.
Therefore, attempts have recently been made to use a coil (Printed Circuit Board coil) and a flat coil (plate coil) Printed on a Printed Circuit Board (PCB) in a transformer.
However, although printed circuit board coils are easy to mass-produce, they cannot be insulated sufficiently because of their small area and low current capacity, and therefore they are more resistant to differential pressure than coils using triple insulated wires. Further, the flat coil needs to be insert-molded (insert molding) for insulation, and the flat coil is hardly fixed to a mold during insert molding, and the shape of the flat coil is deformed by the pressure of the melt or the fraction defective due to breakage of the flat coil increases.
Also, the conventional flat coil is manufactured as a single product through injection molding, so that the entire flat coil is shaken during press working, and shaking or flowing occurs in a mold, thereby generating a defective product.
Prior art document 1: korean laid-open patent No. 2013-0106300 (publication date: 2013, 09 and 27 days)
Prior document 2: korean laid-open patent No. 2016-0041837 (publication date: 2016: 04/18/04/2016)
Disclosure of Invention
Technical problem
The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a two-row flat coil module for a transformer and a method for manufacturing a flat coil element for a transformer, which are suitable for use in the following method for manufacturing a two-row flat coil module for a transformer and a method for manufacturing a flat coil element for a transformer.
Firstly, by configuring an upper row of flat plate coils and a lower row of flat plate coils and connecting the two rows of flat plate coils through a central positioner, the central position can be accurately positioned when the embedded type injection molding machine is embedded in a first injection molding mold, so that the embedded type injection molding machine can be more accurately installed in the first injection molding mold, and the first embedded type injection molding operation is accurately executed (the reliability of the first injection molding operation is improved);
secondly, when the flat coil is rolled or subjected to pressure processing, the whole upper flat coil and the whole lower flat coil can be prevented from being distorted;
thirdly, by adopting a pair of flat coils of an upper flat coil and a lower flat coil, the problem that the existing single flat coil is distorted in pressure processing can be solved, and the problem of disqualification caused by shaking can be solved when the flat coil is embedded and installed in a die;
fourthly, by configuring the upper frame bar, the lower frame bar, the connecting frame bar, and the side connecting pieces, the upper plate coil and the lower plate coil can be accurately formed without shaking or twisting in the rolling or press working process, and the insert injection molding operation can be stably performed without flowing in the first injection mold when the first injection molding operation is performed;
fifthly, the flat coil element for the transformer can be manufactured to have two rows of upper flat coils and lower flat coils at the same time, so that the productivity is improved, and accurate injection molding is realized.
Means for solving the problems
The two-row flat coil assembly for a transformer of the present invention for achieving the object is characterized by comprising: an upper flat coil starting from one terminal and ending at the other terminal after forming a spiral pattern; a lower flat coil symmetrically arranged in an opposite manner to the upper flat coil, and starting from one terminal to form a spiral pattern and ending at the other terminal; and a center locator for connecting an outermost periphery spiral pattern portion on a side opposite to the terminal of the upper flat coil and an outermost periphery spiral pattern portion on a side opposite to the terminal of the lower flat coil to constitute a center in a longitudinal direction of the upper flat coil and the lower flat coil.
The method for manufacturing a flat coil element for a transformer of the present invention for achieving the object is characterized by comprising the steps of: preparing a metal sheet; forming the metal sheet into a two-line flat coil assembly including a plurality of upper flat coils formed with a spiral pattern portion, a lower flat coil symmetrically arranged in an opposing manner to the upper flat coils and formed with a spiral pattern portion, a fixing piece for connecting between the respective spiral pattern portions of the upper and lower flat coils, a center locator for connecting an outermost periphery spiral pattern portion on an opposite side to a terminal of the upper flat coil and an outermost periphery spiral pattern portion on an opposite side to a terminal of the lower flat coil, and terminals of the upper and lower flat coils; aligning the central locator with the central line of a first injection mold, and embedding and installing the two rows of flat coil assemblies in the first injection mold; molding a first insert molding in such a manner that the center locator, the fixing piece, and the terminal are exposed; performing a first blanking to remove the center locator and the fixing piece from the first insert injection molding; embedding and installing the first embedded injection molding object with the central positioner and the fixing sheet removed in a second injection molding mold; and performing a second injection molding on the regions except the terminals to form a planar coil element for the transformer as a second insert molding.
The method of manufacturing a flat coil element for a transformer of the present invention is characterized in that an upper frame bar connected to one terminal of the upper flat coil, a lower frame bar connected to one terminal of the lower flat coil, a connecting frame bar for connecting the upper frame bar and the lower frame bar, and side connection pieces for connecting the upper flat coil and the lower flat coil to the connecting frame bar are simultaneously formed in the step of molding the two rows of flat coil modules, the side connection pieces are blanked and removed together in the step of performing first blanking, the step of embedding and mounting a first insert injection molding from which the center locator, the fixing piece, and the side connection pieces are removed in a second injection mold after the first blanking is performed, and then second injection molding is performed in regions other than the terminals, a step of forming a flat coil element for a transformer.
The method for manufacturing a flat plate coil element for a transformer of the present invention is characterized by further comprising, after the step of forming the flat plate coil element for a transformer is performed, the steps of: one terminal of the upper flat coil is cut from the upper frame bar, and one terminal of the lower flat coil is cut from the lower frame bar, thereby separating and taking out the flat coil element for the transformer as the second insert injection molding.
ADVANTAGEOUS EFFECTS OF INVENTION
The two-row flat coil assembly for a transformer and the method for manufacturing the flat coil element for a transformer according to the present invention having the above-described configuration have the following effects:
firstly, by configuring an upper row of flat plate coils and a lower row of flat plate coils and connecting the two rows of flat plate coils through a central positioner, the central position can be accurately positioned when the embedded type injection molding machine is embedded in a first injection molding mold, so that the embedded type injection molding machine can be more accurately installed in the first injection molding mold, and the first embedded type injection molding operation is accurately executed (the reliability of the first injection molding operation is improved);
secondly, when the flat coil is rolled or subjected to pressure processing, the whole upper flat coil and the whole lower flat coil can be prevented from being distorted;
thirdly, by adopting a pair of flat coils of an upper flat coil and a lower flat coil, the problem that the existing single flat coil is distorted during pressure processing can be solved, and the problem of disqualification caused by shaking can be solved when the flat coil is embedded and installed in a die;
fourthly, by configuring the upper frame bar, the lower frame bar, the connecting frame bar, and the side connecting pieces, the upper plate coil and the lower plate coil can be accurately formed without shaking or twisting in the rolling or press working process, and the insert injection molding operation can be stably performed without flowing in the first injection mold when the first injection molding operation is performed;
fifthly, the flat coil element for the transformer can be manufactured to have two rows of upper flat coils and lower flat coils at the same time, so that the productivity is improved, and accurate injection molding is realized.
Drawings
Fig. 1 is a structural view of a flat plate coil assembly for a transformer according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a main portion of FIG. 1;
FIG. 3 is a conceptual diagram of a first shot injection molded article;
FIG. 4 is a conceptual view of the first shot shown in FIG. 3 after removing the centering tabs, securing tabs 130, 230, and side attachment tabs 410, 420 from the first shot;
FIG. 5 is a conceptual diagram of a planar coil component for a transformer as a second injection-molded object;
fig. 6 is a flow diagram of a method of manufacturing a flat-plate coil member for a transformer using a two-row flat-plate coil assembly according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of a two-row flat coil assembly for a transformer and a method of manufacturing a flat coil element for a transformer according to the present invention will be described in detail below with reference to the accompanying drawings.
As shown in the drawings, a two-row flat coil assembly a for a transformer according to an embodiment of the present invention is characterized by comprising: a conductive upper plate coil 100 which starts from one terminal 111 and terminates at the other terminal 112 after forming a spiral pattern; a conductive lower plate coil 200 symmetrically arranged to face the upper plate coil 100, and formed in a spiral pattern from one terminal 211 and then terminated at the other terminal 212; and a center locator 300 for connecting the outermost peripheral helical pattern portion 113 on the opposite side of the terminals 111, 112 of the upper flat coil 100 and the outermost peripheral helical pattern portion 213 on the opposite side of the terminals 211, 212 of the lower flat coil 200 to constitute the center in the longitudinal direction of the upper flat coil 100 and the lower flat coil 200.
The upper flat coil 100 includes a spiral pattern portion 113 having a shape of a flat-plate-like multi-turn and terminals 111 and 112 formed at one end and the other end of the spiral pattern portion 113, and the lower flat coil 200 includes a spiral pattern portion 213 having a shape of a flat-plate-like multi-turn and terminals 211 and 212 formed at one end and the other end of the spiral pattern portion 213.
When it is mounted in the insert injection mold, if the flat coil moves, the flat injection cannot be precisely performed, and therefore, in order to solve such a problem, the upper and lower flat coils 100 and 200 are prevented from moving by forming the center locator 300, by which the upper and lower flat coils 100 and 200 cannot move in the mold, thereby achieving precise injection.
That is, according to the configuration of the center locator 300, there are advantages as follows: the center of the center locator 300 is arranged in the first injection mold, so that the center of the center can be accurately located when the center is embedded in the first injection mold, the center can be more accurately installed in the first injection mold, and the first embedding injection molding operation can be accurately executed.
Further, the upper and lower plate coils 100 and 200 are prevented from being twisted during rolling or press working.
Moreover, the method has the following advantages: by using the upper plate coil 100 and the pair of upper and lower plate coils 100 and 200, distortion does not occur during press working as compared with the conventional single plate coil, and a defective product is not generated due to shaking during mounting because the coil is fitted to a die.
The two-row flat coil assembly a for a transformer according to an embodiment of the present invention is characterized in that fixing pieces 130, 230 are formed between the spiral pattern portions 113, 213 of the upper and lower flat coils 100, 200 to prevent the spiral pattern portions 113, 213 from being twisted during the molding of the upper and lower flat coils 100, 200, the fixing pieces 130, 230 being connected across between the spiral pattern portions 113, 213.
The two-row flat coil assembly a for a transformer according to an embodiment of the present invention is characterized by further comprising an upper frame bar 510 connected to one terminal 111 of the upper flat coil, and a lower frame bar 520 connected to one terminal 211 of the lower flat coil.
The two-row flat coil assembly a for a transformer according to an embodiment of the present invention is characterized by further comprising a connecting frame rod 530 for connecting the upper frame rod 510 and the lower frame rod 520.
The two-row flat coil assembly a for a transformer according to an embodiment of the present invention is characterized by further comprising side connection pieces 410 and 420 for connecting the upper flat coil 100 and the lower flat coil 200 to the connection frame bars 530.
According to the configuration of the upper frame bar 510, the lower frame bar 520, the connecting frame bar 530, and the side connection pieces 410 and 420, it is possible to accurately form the upper and lower plate coils 100 and 200 without shaking or twisting during rolling or press working, and to stably perform the insert injection molding work without flowing in the first injection mold when performing the first injection molding work.
A method of manufacturing a flat plate coil component for a transformer according to an embodiment of the present invention having the configuration described above is described below.
In step S610, first, a conductive metal sheet (not shown) is prepared.
In step S620, the metal sheet is processed by, for example, rolling or press blanking to form two rows of flat coil assemblies a.
As described above, the two-row flat coil assembly a includes: a plurality of upper plate coils 100 formed with a spiral pattern portion 113; a lower plate coil 200 symmetrically arranged to face the upper plate coil 100 and having a spiral pattern portion 213 formed thereon; fixing pieces 130, 230 for connecting between the respective spiral pattern portions 113, 213 of the upper flat coil 100 and the lower flat coil 200; a center positioner 300 for connecting an outermost periphery spiral pattern portion 113 on the opposite side of the terminals 111 and 112 of the upper flat coil 100 and an outermost periphery spiral pattern portion 213 on the opposite side of the terminals 211 and 212 of the lower flat coil 200 to constitute the centers of the upper flat coil 100 and the lower flat coil 200 in the longitudinal direction; and terminals 111, 112, 211, 212 of the upper and lower flat coils.
Preferably, the two-row flat coil assembly a simultaneously forms an upper frame bar 510 connected to one terminal 111 of the upper flat coil, a lower frame bar 520 connected to one terminal 211 of the lower flat coil, a connection frame bar 530 for connecting the upper frame bar 510 and the lower frame bar 520, and side connection pieces 410, 420 for connecting the upper flat coil 100 and the lower flat coil 200 to the connection frame bar 530.
Then, step S630 is performed to align the center locator 300 with the center line (not shown) of the first injection mold, and insert and mount the two rows of flat coil assemblies a into the first injection mold (not shown).
Then, in step S640, the first insert molding B1 is molded so that the center retainer 300, the fixing pieces 130 and 230, and the terminals 111, 112, 211 and 212 are exposed, that is, by injecting a molding resin, the portions other than the center retainer 300, the fixing pieces 130 and 230, and the terminals 111, 112, 211 and 212 are coated with an insulating resin.
Thereafter, in step S650, after the first insert molding B1 is taken out, a first blanking is performed to remove the center locator 300, the fixing pieces 130, 230, and the side connection pieces 410, 420 from the first insert molding B1.
The first insert injection B2 after the first blanking is shown in fig. 4.
In step S660, the first insert molding B2 is inserted and mounted in a second injection mold (not shown) after removing the center locator 300, the fixing pieces 130 and 230, and the side connection pieces 410 and 420.
Then, in step S670, a resin is injected into the regions other than the terminals 111, 112, 211, and 212, and a second injection molding is performed, thereby forming the flat coil element B for the transformer as a second insert molding.
Finally, in step S680, one terminal 111, 112, 211, 212 of the upper flat coil is cut from the upper frame bar 510, and one terminal 211 of the lower flat coil is cut from the lower frame bar 520, so that the flat coil element B for the transformer, which is the second insert injection molding, is separated and taken out, thereby completing the product.
Having thus described the preferred embodiments in accordance with the present invention, it will be apparent to those of ordinary skill in the art that the present invention may be embodied in other specific forms than the foregoing embodiments without departing from the spirit or scope of the invention.
In the two-row flat coil assembly for a transformer and the method for manufacturing the flat coil element for a transformer according to the embodiment of the present invention, the flat coil formed of the upper and lower rows is described as an example, but the present invention is not limited thereto, and for example, a case of forming three or more rows also falls within the technical scope of the present invention.
Further, in the two-row flat coil assembly for a transformer and the method for manufacturing the flat coil element for a transformer according to the embodiment of the present invention, the case where the two-row flat coil assembly for a transformer and the method for manufacturing the flat coil element for a transformer are configured by 4 upper flat coils and 4 lower flat coils, respectively, has been described as an example.
Accordingly, the foregoing embodiments are to be considered illustrative rather than restrictive, and the invention is not to be limited to the foregoing description, but may be modified within the scope and equivalents of the appended claims.
Claims (8)
1. A two-row flat coil component for a transformer is characterized in that,
the method comprises the following steps:
an upper plate coil (100) which is formed in a spiral pattern from one terminal (111) and then terminates at the other terminal (112);
a lower plate coil (200) symmetrically arranged to face the upper plate coil (100), and terminating at one terminal (212) after a spiral pattern is formed from the other terminal (211); and
and a center locator (300) for connecting an outermost spiral pattern portion (113) on the opposite side of the terminals (111, 112) of the upper flat coil (100) and an outermost spiral pattern portion (213) on the opposite side of the terminals (211, 212) of the lower flat coil (200) to constitute the center in the longitudinal direction of the upper flat coil (100) and the lower flat coil (200).
2. Two rows of flat coil assemblies for a transformer according to claim 1,
a fixing piece (130, 230) is formed between the spiral pattern portions (113, 213) of the upper and lower plate coils (100, 200) to prevent the spiral pattern portions (113, 213) from being distorted during the molding of the upper and lower plate coils (100, 200), the fixing piece (130, 230) being connected across between the spiral pattern portions (113, 213).
3. The two-row flat-coil assembly for a transformer according to claim 1, further comprising an upper bar (510) connected to one terminal (111) of the upper flat coil, and a lower bar (520) connected to one terminal (211) of the lower flat coil.
4. The two-row flat coil assembly for a transformer according to claim 3, further comprising a connecting rod (530) for connecting the upper rod (510) and the lower rod (520).
5. The two rows of flat coil assemblies for a transformer according to claim 4, further comprising side connection tabs (410, 420) for connecting the upper flat coil (100) and the lower flat coil (200) to the connection bar (530).
6. A method of manufacturing a planar coil component for a transformer, comprising:
a step (S610) of preparing a metal sheet;
a step (S620) of forming the metal sheet into a two-line flat coil assembly (A) including a plurality of upper flat coils (100) formed with spiral pattern portions (113), a lower flat coil (200) symmetrically arranged in a manner to face the upper flat coils (100) and formed with spiral pattern portions (213), fixing pieces (130, 230) for connecting between the spiral pattern portions (113, 213) of the upper flat coils (100) and the lower flat coils (200), a center locator (300) for connecting outermost periphery spiral pattern portions (113, 213) on the opposite side to the terminals (111, 112) of the upper flat coils (100) and outermost periphery spiral pattern portions (113, 213) on the opposite side to the terminals (211, 212) of the lower flat coils (200), and terminals (111, 213) of the upper flat coils and the lower flat coils, 112. 211, 212);
step (S630), aligning the center locator (300) with the center line of a first injection mold, and inlaying and installing the two rows of flat coil assemblies (A) in the first injection mold;
a step (S640) of molding a first insert molding (B1) so that the center retainer (300), the fixing pieces (130, 230), and the terminals (111, 112, 211, 212) are exposed;
a step (S650) of performing a first blanking to remove the center locator (300) and the fixing plate (130, 230) from the first insert molding (B1);
a step (S660) of mounting the first insert injection molding (B2) with the center retainer (300) and the fixing pieces (130, 230) removed, in a second injection mold; and
and a step (S670) of performing a second injection molding on the regions except the terminals (111, 112, 211, 212) to form a planar coil element (B) for the transformer as a second insert molding.
7. The method for manufacturing a flat plate coil component for a transformer according to claim 6,
in the step (S620) of molding the two rows of plate coil assemblies (A), an upper frame bar (510) connected to one terminal (111) of the upper plate coil, a lower frame bar (520) connected to one terminal (211) of the lower plate coil, a connecting frame bar (530) for connecting the upper frame bar (510) and the lower frame bar (520), and side connection pieces (410, 420) for connecting the upper plate coil (100) and the lower plate coil (200) to the connecting frame bar (530) are simultaneously formed,
in the step (S650) of performing the first blanking, the side connection pieces (410, 420) are blanked and removed together,
after the first punching, a step (S660) is performed in which a first insert molding (B2) is inserted and attached to a second injection mold after the center locator (300), the fixing pieces (130, 230), and the side connection pieces (410, 420) are removed, and then a step (S670) is performed in which a second injection molding is performed in a region other than the terminals (111, 112, 211, 212) to form a transformer flat coil element (B).
8. The method of manufacturing a flat coil element for a transformer according to claim 7, further comprising a step (S680) of cutting one terminal (111, 112, 211, 212) of the upper flat coil from the upper frame bar (510) and cutting one terminal (211) of the lower flat coil from the lower frame bar (520) after the step (S670) of forming the flat coil element (B) for a transformer is performed, thereby separating and taking out the flat coil element (B) for a transformer as a second insert injection molding.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2019/014943 WO2021090972A1 (en) | 2019-11-06 | 2019-11-06 | Two-row planar coil assembly for transformer and method for manufacturing planar coil element for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114631159A true CN114631159A (en) | 2022-06-14 |
Family
ID=75849767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980101747.7A Pending CN114631159A (en) | 2019-11-06 | 2019-11-06 | Two-row flat coil component for transformer and manufacturing method of flat coil component for transformer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114631159A (en) |
| WO (1) | WO2021090972A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101029514B1 (en) * | 2003-11-25 | 2011-04-18 | 가부시키가이샤 산샤덴키세이사쿠쇼 | coil |
| US8237535B2 (en) * | 2010-04-16 | 2012-08-07 | World Properties, Inc. | Integral planar transformer and busbar |
| KR101376930B1 (en) * | 2012-09-14 | 2014-03-20 | 엘에스산전 주식회사 | Transformer |
| KR20180117767A (en) * | 2017-04-19 | 2018-10-30 | 유원용 | Method for manufactruing coil element for transformer |
| KR102024849B1 (en) * | 2018-11-16 | 2019-09-24 | 주식회사 에이텀 | Planary secondary coil assembly for transformer |
-
2019
- 2019-11-06 CN CN201980101747.7A patent/CN114631159A/en active Pending
- 2019-11-06 WO PCT/KR2019/014943 patent/WO2021090972A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021090972A1 (en) | 2021-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100337739B1 (en) | Method of Producing Inductor | |
| KR101096957B1 (en) | Electromagnetic coil means | |
| KR102024849B1 (en) | Planary secondary coil assembly for transformer | |
| US6665932B2 (en) | SMT connector and method of production of same | |
| CN114334428B (en) | Manufacturing method of integrally-formed molded inductor | |
| US4887347A (en) | Method of producing a contact spring structure of an electromagnetic relay | |
| KR101958648B1 (en) | Manufactruing method of plate secondary coil assembly for transformer | |
| KR101430427B1 (en) | A Method of Forming Further Electric Terminals On Both Sides Of A Composited Power Inductor | |
| CN1307661C (en) | Component core with coil terminations | |
| US20160308297A1 (en) | Spring connector | |
| JPH05315176A (en) | Manufacture of coil device | |
| CN201608033U (en) | Splicing type surface-mounted transformer framework | |
| CN114631159A (en) | Two-row flat coil component for transformer and manufacturing method of flat coil component for transformer | |
| CN112217307A (en) | Stator of electric motor and manufacturing method thereof | |
| KR102394410B1 (en) | Manufacturing method of plate coil element for transformer | |
| KR102226375B1 (en) | A planar transformer | |
| US10395816B2 (en) | Magnetic device fabrication method | |
| CN220341540U (en) | Electrical connection tab assembly and tooling blank for an electrical connection tab assembly | |
| KR102009434B1 (en) | Plate secondary coil assembly for transformer | |
| KR102256547B1 (en) | Planary secondary coil assembly for transformer | |
| KR102281278B1 (en) | Planary secondary coil assembly for transformer | |
| KR20190124167A (en) | Coil component of flat type transformer and manufacturing method for the same | |
| CN213183869U (en) | Choke coil convenient to installation | |
| US20110167624A1 (en) | Method for manufacturing coil holders | |
| CN216288981U (en) | Antenna device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |