WO2020138938A1

WO2020138938A1 - Transformer

Info

Publication number: WO2020138938A1
Application number: PCT/KR2019/018441
Authority: WO
Inventors: 한택수; 이정수
Original assignee: 주식회사 에이텀
Priority date: 2018-12-27
Filing date: 2019-12-26
Publication date: 2020-07-02
Also published as: CN113228206B; CN113228206A; KR102109367B1

Abstract

The present invention relates to a transformer comprising: a first coil body (110) including a first flat coil (111) and a first insulator (112); a second coil body (120) including a second flat coil (121) and a second insulator (122); a primary coil element (C1) inserted between the first coil body (110) and the second coil body (120) so as to generate an induced current in the first and second coil bodies (110, 120); a primary side terminal block (140) formed at the front end of the first insulator (112); primary side terminal pins (P1) provided in a terminal hole (140a) of the primary side terminal block (140); a secondary side terminal block (150) formed at the rear end of the first insulator (112); and secondary side terminal pins (P2) provided at the secondary side terminal block (150).

Description

Transformers

The present invention relates to a small transformer for a charger and an adapter, and more particularly, to a transformer in which the terminal block for fixing the terminal pin is integrally formed on the coil element itself without adopting a terminal mount for fixing the terminal pin. will be.

In general, a transformer is a device that increases or decreases an alternating voltage using an electromagnetic mutual induction action, and is composed of a primary coil, a secondary coil, and a magnetic core (magnetic core).

On the other hand, in the case where a flat-type secondary coil is adjacent to a flat-type primary coil constituting a transformer, it is necessary to stably position the secondary coil in a molding using insert injection or the like so that the transformer operates stably. have.

As a related prior art document, "Patented Transformer" is known as Patent No. 10-0366241 (Announcement Date: December 31, 2002).

And, the proposed technology to improve the defects in the operating characteristics, which is a problem of the "thin film planar transformer" disclosed in 10-0366241, the "transformer according to the registration number 10-1579427 (announcement: December 22, 2015) "Is known.

In the "transformer" according to the registration number 10-1579427, the primary coil is standardized on both sides of the double-sided printed circuit board, and the lower secondary coil is fixed on the bottom side of the double-sided printed circuit board by insert injection. It is an object of the present invention to provide a transformer for adjoining a secondary coil molding and adjoining an upper secondary coil molding having an upper secondary coil fixed therein by insert injection on an upper surface of a double-sided printed circuit board.

In addition, the "transformer" according to the registration number 10-1579427 above is mounted by using a bobbin or a terminal mount to be mounted on the main PCB of the charger or adapter when it is finally provided on the charger or adapter as a finished product. have.

This bobbin [terminal mount] is provided to be able to cover all the magnetic cores (magnetic cores) and is mounted on the main PCB.

However, the "transformer" according to 10-1579427 according to the prior art as described above had the following problems.

First, it is mounted on the main PCB of the finished product (charger, adapter) while covering both the magnetic core and the primary and secondary coil molding using the bobbin [terminal mount], so the size of the product becomes very large, and this is the finished product (charger, It has been pointed out as a problem that goes against the recent miniaturization trend due to the large volume of the adapter).

Second, after manufacturing each pair of upper and lower secondary coil moldings, insert them into the magnetic core together with the primary coil PCB, and then mount them on the main PCB of the finished product using a separate component bobbin [terminal mount]. There was a problem that the production cost of the transformer as a whole was increased due to the large number of assembly steps.

The present invention was created to solve the problems of the prior art as described above, the purpose of the transformer according to the present invention,

First, without adopting a terminal mount for fixing the terminal pin, the product is formed by integrally forming a terminal block for fixing the terminal pin on the first and second coil bodies (specifically, insulating parts as secondary coil elements) itself. Transformer), and also reduce the number of man-made products and the number of parts,

Secondly, by miniaturizing the product, the product size can be reduced and the height of the product can be reduced (thinning and miniaturization of the transformer),

Third, by reducing the number of parts and the number of assembly work, it is possible to reduce the manufacturing cost of the product,

Fourth, the primary coil element (hereinafter simply referred to as the'primary side coil') is provided on the first and second coil bodies (secondary coil element) (also simply referred to as the'secondary side coil'), thereby providing a primary coil element and Make it possible to minimize the distance between the secondary coils,

Fifth, by minimizing the distance between the primary side coil and the secondary side coil, the magnetic coupling force between the primary side coil and the secondary side coil is increased to improve the power transmission efficiency of the transformer.

Sixth, by minimizing the distance between the primary coil and the secondary coil, it is possible to reduce the magnetic field loss and thereby improve the power transmission efficiency.

Seventh, by forming a holding member at a fixed position where the center is aligned between the secondary side coil and the primary side coil, and inserting the primary side coil into the holding member to be center aligned, the secondary side coil and the primary side coil Since there is no need for a separate center alignment, the time required for center alignment can be reduced, thereby improving center alignment operability.

Eighth, by forming a holding member at a fixed position that is center-aligned between the secondary coil and the primary coil, and having the primary coil on the holding member, self-induction efficiency is maximized and ripple generation can be suppressed at the same time. Make it possible,

Ninth, by providing a primary coil inside the secondary coil element (loading), it is possible to minimize leakage magnetic flux.

Tenth, forming a holding member for holding the primary coil on the first coil body of the secondary coil element, and the second coil body of the secondary coil element functions as the secondary coil while simultaneously covering the holding member and covering the primary coil By simultaneously performing the cover role of charging, it is possible to hold and charge the primary coil with a simple configuration and minimize the volume using the existing configuration,

Eleventh, it is possible to solve the problem of securing the insulation distance that may appear in the process of miniaturizing the product by eliminating the terminal mount by adopting the insulation distance extension member.

Twelfth, by adopting the connector cover, it is possible to solve the insulation problem between the metallic connector of the charger and the transformer,

The thirteenth is to provide a transformer suitable for solving the problem of insulation between a metallic connector of a charger and a transformer by adopting an upper insulating film and a lower insulating film.

In order to achieve the above object, the transformer of the present invention includes a first terminal, a first flat coil formed of a first coil pattern portion extending from the first terminal and formed in a flat spiral pattern, and a first central hole. A first coil body formed of a first insulating body made of a synthetic resin material having a first flat plate coil excluding the first terminal, and an induction current generated in the first coil body provided in the first coil body The primary coil element for making the primary terminal block is formed, and the primary side terminal block is formed integrally with the first insulating portion at the front end of the first insulating portion, and the primary side terminal block is inserted into the terminal hole of the primary side terminal block. A plurality of primary terminal pins connected to the primary coil element, a secondary terminal block formed at a rear end of the first insulating portion and having a secondary terminal hole, and a secondary terminal hole provided in the secondary terminal block and inserted into the secondary terminal hole It is characterized by comprising a plurality of secondary terminal pins connected to the terminal.

In order to achieve the above object, the transformer of the present invention includes a first terminal, a first flat coil formed of a first coil pattern portion extending from the first terminal and formed in a flat spiral pattern, and a first central hole. The first coil body is formed of a first insulating body made of a synthetic resin material including a first flat coil except for the first terminal, and a synthetic resin material having a central through hole to correspond to the first central hole. A cover for covering one coil body, a first coil element for inserting between the first coil body and the cover and generating an induced current in the first coil body, and a primary terminal hole are formed, and the first insulating part A primary terminal block integrally formed with a first insulating portion at a front end, a plurality of primary terminal pins inserted into terminal holes of the primary terminal block and connected to the primary coil element, and at a rear end of the first insulating portion It is characterized in that it is configured to include a secondary terminal block formed with a secondary terminal hole and a plurality of secondary terminal pins inserted into the secondary terminal hole of the secondary terminal block and connected to the first terminal. .

In order to achieve the above object, the transformer of the present invention includes a first terminal, a first flat coil formed of a first coil pattern portion extending from the first terminal and formed in a flat spiral pattern, and a first central hole. A first coil body formed of a first insulator made of a synthetic resin material including a first flat plate coil excluding the first terminal, a second terminal, and extending from the second terminal to form a flat spiral pattern A second coil body composed of a second plate-shaped coil composed of a second coil pattern portion, and a second insulating body made of a synthetic resin material having a second central hole and embedding a second plate-shaped coil excluding the second terminal, , Inserted between the first coil body and the second coil body, the primary coil element for generating an induction current in the first and second coil bodies, and a primary terminal hole are formed at the front end of the first insulating portion A primary terminal block integrally formed with a first insulating portion, a plurality of primary terminal pins inserted into terminal holes of the primary terminal block and connected to the primary coil element, and formed at a rear end of the first insulating portion It is characterized by comprising a plurality of secondary terminal pins which are provided in the secondary terminal hole of the secondary terminal block, and which are inserted into the secondary terminal hole of the secondary terminal block and are connected to the first terminal.

The transformer of the present invention having the above configuration has the following effects.

First, without adopting a terminal mount for fixing the terminal pin, the product is formed by integrally forming a terminal block for fixing the terminal pin on the first and second coil bodies (specifically, insulating parts as secondary coil elements) itself. Transformer) can be miniaturized, and also has the effect of reducing the number of manufacturing processes and parts.

Second, there is an effect that the size of the product can be reduced and the height of the product can be reduced by miniaturization of the product (thinning and miniaturization of the transformer).

Third, by reducing the number of parts and the number of assembly work, there is an effect that can reduce the manufacturing cost of the product.

Fourth, by providing a primary coil element for a transformer (hereinafter, also simply referred to as a primary side coil) in the secondary coil element itself, there is an effect that the distance between the primary side coil and the secondary side coil can be minimized.

Fifth, by minimizing the distance between the primary side coil and the secondary side coil, there is an effect that the efficiency of the transformer can be improved by increasing the magnetic coupling force between the primary side coil and the secondary side coil.

Sixth, it is possible to reduce the magnetic field loss by minimizing the distance between the primary coil and the secondary coil, and as a result, it is possible to improve the efficiency of the transformer.

Seventh, by forming a holding member at a fixed position where the center is aligned between the secondary side coil and the primary side coil, and inserting the primary side coil into the holding member to be center aligned, the secondary side coil and the primary side coil There is no need for a separate center alignment, and the time required for center alignment work can be reduced, thereby improving the center alignment workability.

Eighth, by forming a holding member at a fixed position that is center-aligned between the secondary coil and the primary coil, and having the primary coil on the holding member, the efficiency of the transformer can be increased, and ripple occurrence can be suppressed. It has the effect.

Ninth, it is possible to minimize the leakage magnetic field by providing the primary coil inside the secondary coil element.

Tenth, a holding member for holding the primary coil is formed on the first coil body of the secondary coil element, and the second coil body of the secondary coil element functions as the secondary coil while simultaneously being provided on the first coil body. By simultaneously acting as a cover to charge and hold the holding member, it is possible to hold and charge the primary coil while minimizing the volume with a simple configuration using the existing configuration.

Eleventh, it is possible to solve the problem of securing the insulation distance that may occur in the process of miniaturizing the product while eliminating the terminal mount by adopting the insulation distance extension member.

Twelfth, by adopting the connector cover portion, there is an effect that can solve the insulation problem between the metal connector of the charger and the transformer.

Thirteenth, by adopting the upper insulating film and the lower insulating film, there is an effect of solving the insulating problem between the metallic connector of the charger and the transformer.

1 is a perspective view of a planar transformer (A) according to an embodiment of the present invention.

FIG. 2A is a side view of FIG. 1, and FIG. 2B is a plan view of FIG. 1.

FIG. 3A is a rear view of FIG. 1, and FIG. 3B is a front view of FIG. 1.

4 is a cross-sectional view of FIG. 1.

5 is a rear view of a modified embodiment of the planar transformer A according to an embodiment of the present invention.

6 is in the planar transformer (A) according to an embodiment of the present invention, the primary coil element (C1) by charging the first coil body 110 and the second coil body 120 is coupled It is a perspective view of the state.

7 is a perspective view of a state in which the first coil body 110 and the second coil body 120 are separated in the planar transformer A according to an embodiment of the present invention.

8 is a configuration diagram of main parts of a planar transformer A according to another embodiment of the present invention.

9 is a perspective view of the insulating structure 200 in FIG. 1.

10 is a bottom view of FIG. 9.

11 is a plan view of FIG. 9.

12 is a rear perspective view of FIG. 9.

13 is a perspective view of another example of the primary coil element C1 in the planar transformer A according to an embodiment of the present invention.

Next will be described in detail with reference to the accompanying drawings, preferred embodiments of the inventors transformer.

The transformer according to an embodiment of the present invention relates to a small transformer for a charger and an adapter used in a charger or adapter of a portable terminal.

In the transformer according to an embodiment of the present invention, the first coil body 110 and the second coil body 120 are both self-induced from the primary coil element C1 to generate an induction current. Of course, it corresponds to the device.

The transformer (A) according to an embodiment of the present invention is composed of a first coil (111a) and a first coil pattern portion (111b) extending from the first terminal (111a) to form a flat spiral pattern A first insulating plate 112 made of synthetic resin material having a first flat coil 111 and a first central hole 110a and including a first flat coil 111 excluding the first terminal 111a. ) Is provided in the first coil body 110, the first coil body 110, the primary coil element (C1) for generating an induction current in the

first coil body

110, and 1 The primary terminal block 140 is formed with a primary terminal hole 140a and integrally formed with the primary insulating portion 112 at the front end (opposite direction of the primary terminal) of the primary insulating portion 112. , A plurality of (for example, four) primary-side terminal pins P1 inserted into the terminal holes 140a of the primary-side terminal block 140 and connected to the primary coil element C1, and the first insulating part ( It is formed at the rear end of 112, the secondary side terminal block 150a is formed, the secondary side terminal block 150, and the secondary side terminal block 150 of the secondary side terminal hole 150a is provided and inserted into the first terminal Characterized in that it comprises a plurality of (eg, two) secondary-side terminal pins P2 connected to (111a).

As described above, the transformer A according to an embodiment of the present invention is a transformer having a primary coil element C1 and a first coil body 110 as a basic configuration.

In the transformer (A) according to an embodiment of the present invention, the first terminal (111a), and the first coil (111a) extending from the first coil pattern portion 111b formed of a flat pattern is formed of The first insulating plate 111 made of a synthetic resin material having a first flat coil 111 and a first flat coil 111 except for the first terminal 111a and having the first flat hole 111a formed therein ( 112) is composed of a first coil body 110, a second terminal 121a, and a second coil pattern portion 121b extending from the second terminal 121a to form a flat spiral pattern. A second insulating portion 122 made of a synthetic resin material having a second flat coil 121 and a second central hole 120a and embedding a second flat coil 121 excluding the second terminal 121a ) Is provided between the second coil body 120 and the first coil body 110 and the second coil body 120, and generates an induced current in the first and

second coil bodies

110 and 120. A primary coil element (C1) and a primary terminal hole (140a) are formed, and are disposed at the front end (opposite direction of the first terminal) of the first insulating portion (112) or the second insulating portion (122). Among the front end of the plurality of primary terminal blocks 140 formed in at least one place and inserted into terminal holes 140a of the primary terminal blocks 140 and connected to the primary coil element C1 (for example, 4) Is formed in at least one of the primary side terminal pins P1 and the rear end of the first insulating portion 112 or the rear end of the second insulating portion 122, and the secondary side terminal hole 150a is formed. A plurality of (for example, two) of the secondary side terminal block 150 and the secondary side terminal block 150 inserted into the secondary side terminal hole 150a and connected to the first and

second terminals

111a and 121a. Characterized in that it comprises a terminal pin (P2) of the vehicle side.

In this case, the transformer A according to an embodiment of the present invention comprises a primary coil element C1 and two secondary coil elements (first coil body 110 and second coil body 120) as a basic configuration. It is a transformer.

In the transformer (A) according to an embodiment of the present invention, the cross section in the transverse direction

A midfoot (M1a) is formed in the center so as to have a shape, and the midfoot (M1a) is interpolated into the first and second central holes (110a, 120a) and the central through hole (C1a) to form a primary coil element (C1) and secondary. A magnetic core M1 may be further included to increase the magnetic coupling force between the first and

second coil elements

110 and 120 which is a coil element, that is, to minimize a leakage magnetic field.

In the transformer (A) according to an embodiment of the present invention, it is formed perpendicular to the first insulating portion 112 at the rear end of the first insulating portion 112, so that the secondary terminal pin P2 and the primary side [ Primary coil element (C1 and magnetic core (M1)). The first vertical plate 113 on the plate for securing the insulation distance between the second insulation and the second insulation at the rear end of the second insulation portion 122 A second vertical plate on a plate formed perpendicular to the part 122 to shield the magnetic field between the secondary terminal pin P2 and the primary side (meaning the primary coil element C1 and the magnetic core M1) 123) is further included, the secondary terminal block 150 is characterized in that formed in at least one of the first vertical plate 113 and the second vertical plate (123).

The secondary terminal block 150 is characterized in that it is formed to protrude outward (rear) from the first vertical plate 113 or the second vertical plate 123.

In the transformer (A) according to an embodiment of the present invention, the secondary terminal block 150 is such that the upper end of the secondary terminal block 150 contacts the first terminal 111a or the second terminal 121a. By being formed on the first vertical plate 113 or the second vertical plate 123, the secondary terminal block 150 supports the

secondary terminals

111a and 121a while supporting the secondary terminal pins P2. Characterized in that the fixed.

In the transformer (A) according to an embodiment of the present invention, in order to securely fix the primary coil element C1 provided between the first and

second coil bodies

110 and 120, the first coil body ( 110) and the second coil body 120 is characterized in that it is configured to further include a locking member (114,124) for fastening to each other.

The locking member protrudes on one side of the second coil body 120 so that the fitting groove 114 is recessed on one side of the first coil body 110 and is detachably fitted to the fitting groove 114. It is characterized in that it is configured to include a fitting projection 124 is formed.

And, in the transformer (A) according to an embodiment of the present invention, the primary coil element (C1) so that there is no separation or play between the first coil body 110 and the second coil body 120. It characterized in that the holding member (115,116) for holding the primary coil element (C1) is further included.

The second coil body 120 is characterized by preventing the play or flow of the primary coil element (C1) by pressing the primary coil element (C1).

The second coil body 120 is characterized in that it serves as a cover (cover) covering the primary coil element (C1) provided between the inner protrusion 115 and the outer protrusion 116.

8 is a block diagram of a transformer A according to another embodiment of the present invention.

In the case of another embodiment shown in FIG. 8, the second coil body 120 is not employed, and the cover 130 is used as its substituted configuration, and the rest of the configuration is the same.

The transformer (A) according to another embodiment of the present invention is composed of a first coil (111a) and a first coil pattern portion (111b) extending from the first terminal (111a) to form a flat spiral pattern A first insulating plate 112 made of synthetic resin material having a first flat coil 111 and a first central hole 110a and including a first flat coil 111 excluding the first terminal 111a. ) Is composed of a first coil body 110, and a cover 130 covering the first coil body 110 as a synthetic resin material having a central through hole 130a formed to correspond to the first central hole 110a. And, is provided between the first coil body 110 and the cover 130, the primary coil element (C1) for generating an induced current in the first coil body 110, and the primary side terminal hole ( 140a) is formed, the first insulating portion 112 or the first insulating portion 112 or the cover 130 in at least one of the front end of the cover 130 or the front end of the cover 130 ) Is formed integrally with the primary-side terminal block 140, and is inserted into the terminal hole 140a of the primary-side terminal block 140 and connected to the primary coil element C1 (for example, four) Primary terminal pin (P1), the second insulating terminal 112 is formed integrally with the first insulating portion 112, the secondary terminal block 150a is formed on the secondary terminal hole (150a) And a plurality of (eg, two) secondary terminal pins P2 which are inserted into the secondary terminal hole 150a of the secondary terminal block 150 and are connected to the first terminal 111a. It is characterized by.

Specifically, the primary terminal block 140 is formed at the front end of the first insulating portion 112 or is formed at the front end of the cover 130.

In the transformer (A) according to another embodiment of the present invention, it is formed perpendicular to the first insulating portion 112 at the rear end of the first insulating portion 112, so that the secondary terminal pin (P2) and the primary side [ The primary coil element (C1 means the magnetic core (M1 means)] is configured to further include a plate-like first vertical plate 113 for increasing the insulation distance, the secondary terminal block 150, the second It is characterized in that it is formed to protrude outward (rear) from the vertical plate 113.

Then, the secondary terminal block 150 is formed on the first vertical plate 113 so that the upper end of the secondary terminal block 150 contacts the first terminal 111a, so that the secondary terminal block 150 is The second terminal pin (P2) is fixed while supporting the first terminal (111a).

In the transformer (A) according to another embodiment of the present invention, the primary coil element (C1) is the first coil body (110) while the first coil body (110) and the cover (130) face each other. ) And the holding

members

115 and 116 that hold the primary coil element C1 so that there is no separation or play between the cover 130 is characterized in that it is configured.

Then, in the transformer (A) according to another embodiment of the present invention, in order to securely fix the primary coil element (C1) provided between the first coil body 210 and the cover 130, the It characterized in that the first coil body 110 and the cover 130 is configured to further include a locking member (114,134) for fastening each other.

The locking member, the fitting groove 114 is formed indented on one side of the first coil body 110, and the fitting formed to protrude on one side of the cover 130 so as to be detachably fitted to the fitting groove 114 Characterized in that it comprises a projection (134).

Next, a specific configuration of the holding

members

115 and 116 will be described.

The holding

members

115 and 116 protrude from the inner surface 110b of the first coil body 110 and contact the inner circumferential surface of the central through hole C1a of the primary coil element C1 to the primary coil element C1. ), the inner protrusion 115 holding the inner circumferential surface of the central through hole C1a, and spaced outwardly from the inner protrusion 115, protrudingly formed on the inner surface 110b of the first coil body 110, primary It comprises an outer protrusion 116 that contacts the outer circumferential surface of the coil element C1 to hold the outer circumferential surface of the primary coil element C1, and the primary coil element C1 is the first coil body 110. It is characterized in that it is placed on the inner surface (110b), it is sandwiched between the inner projection 115 and the outer projection (116).

The primary coil element C1 is characterized in that it is provided in the insertion space S1 formed by the first coil body 110, the inner protrusion 115, the outer protrusion 116, and the cover 130.

The inner protrusion 115 is protruded in a te shape, and the outer protrusion 116 is protruded in a te shape.

The inner projection 115 and the outer projection 116 is characterized in that it is formed integrally with the first insulating portion (112).

The inner protrusion 115 and the outer protrusion 116 are characterized by being integrally formed by the first insulating portion 112 and insert molding.

On the other hand, the primary coil element (C1) is a coil-wound primary coil element (C1) formed by winding an insulated coil, or a substrate type primary having a circuit pattern formed on a PCB substrate as shown in FIG. In either case, the coil element C1 is within the technical scope of the present invention.

That is, the primary coil element C1 includes all elements for inducing the induced current in the secondary coil by generating the primary induced current regardless of its shape or coil winding method.

Next, a technical configuration for solving the problem of securing the insulation distance or securing the safety distance due to the miniaturization of the product will be described.

Transformer (A) according to an embodiment of the present invention, in order to ensure that the lower side of the plate-like first base 211 and the first vertical plate 113 is interpolated and fitted, the first base 211 It is characterized in that it is further configured to further include an insulating distance extending member 210 consisting of a pair of

fitting bars

212 and 213 that are spaced apart and spaced upright.

In the transformer (A) according to an embodiment of the present invention, the distance between the magnetic core (M1) and the secondary terminal pin (P2) is shortened to solve the problem of difficult to secure the insulation distance, the magnetic core (M1) and In order to increase the insulation distance between the secondary terminal pins P2, the first vertical plate 113 is inserted into the insertion channel H1 formed by the pair of

fitting bars

212 and 213 to be provided. It is characterized by.

And, in the transformer (A) according to an embodiment of the present invention, the primary side circuit and the secondary side circuit are insulated from each other in a finished product (for example, a charger) in which the transformer A is mounted, and this insulation has a maximum effect. In order to limit it, it should be kept within a set distance (safety distance). Since the connector insertion space 220a is formed inside, a connector (not shown) of the charger (not shown) (for example, a USB connector) is enclosed so that the connector and the magnet Characterized in that the connector cover portion 220 of synthetic resin material for increasing the distance for insulation between the cores (M1) is further included.

The connector cover part 220, the left and

right side walls

221 and 222 covering the connector from the left and right sides, a loop 223 connecting the upper portions of the left and

right side walls

221 and 222, and connecting the rear ends of the left and

right side walls

221 and 222 It is composed of a rear wall (224), characterized in that the connector insertion space (220a) is formed by the left and right walls (221,222) and the loop (223).

In the transformer (A) according to an embodiment of the present invention, one side is connected to the first base 211 of the insulation distance extension member 210, and the other side is the rear wall 224 of the connector cover portion 220 In connection with, the insulating distance extending member 210 and the second base 230 integrally formed on the connector cover portion 220 and the connector cover portion 220 of the roof 223 protruding upwardly formed An upper insulating film 240 for insulating between the connector of the charger and the transformer (A), and a lower insulating film protruding downward on the lower surface of the second base 230 to insulate the primary circuit part and the secondary circuit part of the charger ( 250) is further characterized in that it is configured to be included.

The upper insulating layer 240 is vertically bent at the first upper diaphragm 241 formed by protruding upward from the horizontal side of the loop 223 and upwards at a vertical side of the loop 223 by being vertically bent at the first upper diaphragm 241. The first upper vertical membrane 242 protruding into the second upper membrane by bending vertically from the first upper vertical membrane 242 so as to face the first upper diaphragm 241 at the same time as deviating from the loop 223 243 and a second upper vertical membrane 244 vertically bent outward from the second upper horizontal membrane 243.

The lower insulating layer 250 includes a first lower vertical layer 251 protruding downward from a lower surface of the second base 230 in parallel with the rear wall 224 of the connector cover portion 220 and the first The lower vertical film 251 is bent in a diagonal line and is formed to protrude downward, and the lower upper film 252 is formed so as to escape from the second base 230 and coincide with the second upper film 243 at the same time. ), the lower diaphragm 253 integrally formed, and vertically bent outward from the lower diaphragm 253 and integrally formed with the second upper vertical membrane 244 to match the second upper vertical membrane 244. It is characterized by being composed of a second lower diaphragm (254).

The whole consisting of the insulating distance extending member 210, the connector cover part 220, the second base 230, the upper insulating film 240, and the lower insulating film 250 is referred to as an insulating structure 200.

The second base 230 is configured to integrate the insulation distance extension member 210 and the connector cover part 220 into one module.

The insulating structure 200 is formed of a synthetic resin material, and may be manufactured by a resin injection process.

Meanwhile, FIG. 5 shows a rear view of a modified embodiment of the flat-type transformer A according to an embodiment of the present invention.

As illustrated, there is an example in which the secondary terminal block 150 is formed as a single bundle so as to simultaneously hold two secondary terminal blocks 150, and in this case, it belongs to the technical scope of the present invention. .

The reference numeral (Br) of the unexplained code is a connection part (Br) for connecting the first coil pattern part 111b and the second coil pattern part 121b in series.

In the flat type transformer A according to an embodiment of the present invention, whether the first and

second coil bodies

110 and 120 are connected in series by the connecting portion Br or there is no connecting portion Br, the first and second coil bodies In any case, regardless of whether the (110,120) is connected in parallel, it belongs to the technical scope of the present invention.

As described above, preferred embodiments according to the present invention have been described, and it is common knowledge in the art that the present invention can be implemented in other specific forms without changing its technical spirit or essential features in addition to the above-described embodiments. It is self-evident to those who have it. Therefore, the above-described embodiment should be understood as illustrative rather than restrictive.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted to be included in the scope of the present invention.

Claims

The first terminal 111a, a first flat coil 111 formed of a first coil pattern portion 111b extending from the first terminal 111a and formed into a flat spiral pattern, a first central hole A first coil body 110 formed of a first insulating portion 112 made of synthetic resin, in which 110a is formed and embedding a first flat coil 111 excluding the first terminal 111a,

The second terminal 121a and the second flat coil 121 formed of a second coil pattern portion 121b extending from the second terminal 121a to form a flat spiral pattern, and a second central hole A second coil body 120 formed of a second insulating portion 122 made of synthetic resin having 120a formed therein and embedding a second flat plate coil 121 excluding the second terminal 121a,

It is provided between the first coil body 110 and the second coil body 120, the primary coil element (C1) for generating an induced current in the first and second coil bodies (110,120),

The primary side terminal block 140a is formed, and the primary side terminal block 140 is formed in at least one of the front ends of the first insulating portion 112 or the second insulating portion 122,

A plurality of primary terminal pins P1 inserted into the terminal hole 140a of the primary terminal block 140 and connected to the primary coil element C1;

Two secondary terminal blocks 150 formed at at least one location of the rear end of the first insulating portion 112 or the rear end of the second insulating portion 122, and having secondary terminal holes 150a formed thereon;

Characterized in that it comprises two secondary-side terminal pins (P2) inserted into the secondary-side terminal hole (150a) of the secondary-side terminal block (150) and connected to the first and second terminals (111a, 121a). Transformer.
The method according to claim 1,

A first vertical plate 113 formed on the rear end of the first insulating portion 112 to shield the magnetic field between the secondary terminal pin P2 and the magnetic core M1,

It is formed at the rear end of the second insulating portion 122, and further comprises a plate-shaped second vertical plate 123 shielding the magnetic field between the secondary terminal pin P2 and the magnetic core M1,

The secondary terminal block 150, the first vertical plate 113 and the transformer, characterized in that formed in at least one of the second vertical plate (123).
The method according to claim 2,

The secondary terminal block 150, the transformer characterized in that the first vertical plate 113 or the second vertical plate 123 protrudes outward.
The method according to claim 1,

Holding members 115 and 116 that hold the primary coil element C1 so that the primary coil element C1 does not deviate or play between the first coil body 110 and the second coil body 120 are further provided. Transformer comprising the included.
The method according to claim 2,

In order for the plate-shaped first base 211 and the lower side of the first vertical plate 113 to interpolate and fit, a pair of fitting bars spaced apart from the first base 211 and spaced apart and erected upward Transformer comprising the (212,213) insulation distance extension member 210 is further included.
The method according to claim 5,

In order to increase the insulation distance between the magnetic core M1 and the secondary terminal pin P2, the first vertical plate 113 is connected to the insertion channel H1 formed by the pair of fitting bars 212 and 213. A transformer characterized by being provided by being inserted.
The method according to claim 6,

Since the connector insertion space 220a is formed therein, the connector cover portion 220 made of synthetic resin is further included to increase the distance for insulation between the connector of the charger and the magnetic core M1 by enclosing the connector of the charger. Transformer characterized in that.
The method according to claim 7,

One side is connected to the first base 211 of the insulating distance extending member 210, and the other side is connected to the rear wall 224 of the connector cover part 220, so that the insulating distance extending member 210 and the connector cover A second base 230 formed integrally with the part 220 and an upper insulating film formed to protrude upward on the loop 223 of the connector cover part 220 to insulate between the connector of the charger and the transformer (A). A transformer comprising 240 and a lower insulating layer 250 protruding downward on the lower surface of the second base 230 to insulate the primary circuit portion and the secondary circuit portion of the charger.
The method according to claim 4,

The holding member (115,116),

It is formed protruding on the inner surface (110b) of the first coil body 110, by contacting the inner circumferential surface of the central through hole (C1a) of the primary coil element (C1) of the central through hole (C1a) of the primary coil element (C1) The inner projection 115 to hold the inner peripheral surface,

The outer peripheral surface of the primary coil element C1 is spaced outwardly from the inner protrusion 115 and protrudes on the inner surface 110b of the first coil body 110 and contacts the outer peripheral surface of the primary coil element C1. It is configured to include an outer protrusion 116 to hold,

The primary coil element (C1) is mounted on the inner surface (110b) of the first coil body 110, the transformer characterized in that it is held between the inner projection 115 and the outer projection 116.
The method according to claim 1,

In order to securely fix the primary coil element C1 provided between the first and second coil bodies 110 and 120, the locking for fastening the first coil body 110 and the second coil body 120 to each other The transformer characterized in that the member (114,124) is further included.