KR20200081195A - A transformer - Google Patents

Abstract

The present invention relates to a small transformer for a charger and an adapter. A transformer according to the present invention includes: a first terminal (111a); a first flat coil (111) including a first coil pattern portion (111b) extending from the first terminal (111a) and formed in a flat spiral pattern; a first coil body (110) formed with a first central hole (110a) and including a first insulating part (112) which is made of synthetic resin and in which a first flat coil (111) is embedded except for the first terminal (111a); a primary coil element (C1) provided in the first coil body (110) to generate an induced current in the first coil body (110); a primary terminal block (140) formed with a primary terminal hole (140a) therein and integrally formed with the first insulating part (112) at a front end of the first insulating part (112); a plurality of primary terminal pins (P1) inserted into terminal holes (140a) of the primary terminal block (140) and wired with the primary coil element (C1); a secondary terminal block (150) formed at a rear end of the first insulating part (112) and formed with a secondary terminal hole (150a); and a plurality of secondary terminal pins (P2) inserted into the secondary terminal hole (150a) of the secondary terminal block (150) and wired with the first terminal (111a). Accordingly, the product can be miniaturized and product manufacturing costs can be reduced.

Description

Transformer {A TRANSFORMER}

The present invention relates to a compact transformer for a charger and an adapter, in particular, without adopting a terminal mount on which a terminal block for fixing a terminal pin is installed, and by forming a terminal block for fixing a terminal pin integrally with the coil element itself, thereby providing a product. The transformer is suitable for miniaturization and suitable for reducing manufacturing cost.

In general, a transformer (transformer) is a device for increasing or lowering the alternating voltage using an electromagnetic mutual induction action, consisting 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.

Prior art document information related to this: Registered Patent No. 10-0366241 (December 31, 2002) "Thin Film Planar Transformer" is known.

In addition, the proposed technology for improving the defective operation characteristics, which is a problem of the "thin film planar transformer" disclosed in 10-0366241, is "transformer" according to registration number 10-1579427 (announcement date: December 22, 2015). Is known.

The "transformer" according to the registration number 10-1579427 (announcement date: December 22, 2015) has a primary coil formed on both sides of a double-sided printed circuit board, and a lower secondary coil is inserted into the bottom surface of the double-sided printed circuit board. It is an object of the present invention to provide a transformer for adjoining a lower secondary coil molding fixed to the inside by injection, and an upper secondary coil molding fixed to the upper secondary coil by insert injection to the upper surface of the double-sided printed circuit board. Is doing.

In addition, when the "transformer" according to the registration number 10-1579427 (announcement date: December 22, 2015) is finally provided in a finished product charger or adapter, a bobbin is mounted on the main PCB of the charger or adapter. Alternatively, it is mounted using a terminal mount.

The bobbin [terminal mount] is provided to be able to cover all of the magnetic core (magnetic core), and is mounted on the main PCB.

However, the "transformer" by 10-1579427 (announced: December 22, 2015) by 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 moldings using a bobbin [terminal mount], so the size of the product becomes very large. 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 mount them on the main PCB of the finished product again using bobbins [terminal mounts], which are separate parts. There was a problem that the production cost of the transformer as a whole was increased due to the large number of assembly steps.

Document 1: Registered Patent Publication No. 10-1579427 (Announcement date: December 22, 2015) Document 2: Registered Patent Publication No. 10-1655970 (Publication date: 2016.09.08.)

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,

Second, 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 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 so that the center can be 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 the 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 to 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 an insulation problem 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. 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 secondary terminal holes, and secondary terminal terminals of the secondary terminal block are 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 110 and the cover and generating an induction current in the first coil body, and a primary terminal hole are formed and A primary side terminal block integrally formed with a first insulation portion at a front end of the insulation portion, a plurality of primary side terminal pins inserted into the terminal holes of the primary side terminal block and connected to the primary coil element, and the first insulation It is formed at the rear end of the negative, the secondary side terminal block is formed with a secondary terminal hole, and the secondary side terminal block is inserted into the secondary terminal hole and is composed of a plurality of secondary terminal pins connected to the first terminal. It is characterized by.

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 portion made of a synthetic resin material having 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 and 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 that are inserted into the secondary terminal hole of the secondary terminal block and the secondary terminal hole formed in the secondary terminal hole, 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 work and the number of parts.

Second, 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, it is possible to 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 coil and the secondary coil, there is an effect of improving the efficiency of the transformer by increasing the magnetic coupling force between the primary coil and the secondary coil.

Sixth, it is possible to reduce the loss magnetic field 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 so that the center can be 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, by providing the primary coil inside the secondary coil element, there is an effect that the leakage magnetic field can be minimized.

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 problem of insulation 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.
FIG. 7 is a perspective view of a flat type transformer A according to an embodiment of the present invention, in which the first coil body 110 and the second coil body 120 are separated.
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 portion 112 made of a 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, 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 terminal hole 150a is provided and is 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 terminal 111a are formed of a flat coil-shaped pattern 111b. The first insulating plate 111 made of a synthetic resin material having a first flat plate coil 111 and a first flat hole 110a formed therein and including the first flat plate coil 111 excluding the first terminal 111a ( 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 including 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 210 and 220. 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 rear end of the plurality of primary terminal blocks 140 formed in at least one place, and inserted into the 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. It is 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 basically comprises a primary coil element C1 and two secondary coil elements (first coil body 110 and second coil body 120). It is a transformer.

형태가 되도록 중앙에 중족(M1a)이 형성되어 있고, 상기 중족(M1a)이 제1,2 중앙공(110a,120a)과 중앙통공(C1a)에 내삽되어서 1차 코일 소자(C1)와 2차 코일 소자인 제1,2 코일체(110,120) 간의 자기결합력을 높이기 위한 즉 누설자계를 최소로 하기 위한 자기코어(M1)가 더 포함될 수 있다.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 an 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-side terminal block 150 supports the first and second terminals 111a and 121a while supporting the secondary-side terminal pin 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 210 and 220, 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 projection 115 and the outer projection 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 a substituted structure.

Transformer (A) according to another embodiment of the present invention, the first terminal (111a), and extending from the first terminal (111a) is composed of a first coil pattern portion (111b) formed in a flat spiral pattern A first insulating portion 112 made of a 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 the first central hole (110a) to correspond to the central through hole (130a) is formed of synthetic resin material covering the first coil body (110) cover 130 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 and connected to a plurality (for example, 4). 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 inserted into the secondary terminal hole 150a of the secondary terminal block 150 and 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 vertically with respect 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)) is configured to further include a plate-shaped 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 for holding the primary coil element C1 so that there is no separation or play between the cover 130 is characterized in that it is configured.

And, 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, the locking member for fastening each other (114,134) is further included.

The locking member includes a fitting groove 114 formed recessed on one side of the first coil body 110 and a fitting formed protrudingly 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 projection 115 holding the inner circumferential surface of the central through hole (C1a), and spaced outwardly from the inner projection 115, protrudingly formed on the inner surface 110b of the first coil body 110, primary It comprises an outer projection 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 any case, the coil element (C1) falls 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) on 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 a charger (not shown) (for example, a USB connector) is enclosed, and the connector of the charger and magnetic It characterized in that the connector cover portion 220 of synthetic resin material for increasing the distance for insulation between the core (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 insulating distance extension member 210, and the other side is the rear wall 224 of the connector cover portion 220 In connection with, the insulation 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 and the transformer A, and a lower insulating film 250 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. It is characterized in that it is further 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 diaphragm by vertically bending at the first upper vertical membrane 242 so as to face the first upper horizontal membrane 241 at the same time as deviating from the loop 223 243 and a second upper vertical film 244 vertically bent outward from the second upper horizontal film 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 diagonally from the lower vertical film 251 to protrude downward, and the second upper film 243 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 coincide with the second upper vertical membrane 244. It is characterized by being composed of a second lower diaphragm (254).

The entire structure composed 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 extending 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 is 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 bundle so as to simultaneously hold two secondary terminal blocks 150, and in this case, of course, 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 it should be interpreted that all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention.

A: Transformer according to an embodiment of the present invention
C1: Primary coil element C1a: Central through of primary coil element
110: first coil body 111: first flat coil
111a: 1st terminal 111b: 1st coil pattern part
110a: first central hole 110b: inner surface of the first coil body
112: first insulating portion 113: first shielding plate
114: fitting groove 115: inner projection
116: outer protrusion
120: second coil body 121: second flat coil
121a: second terminal 121b: second coil pattern portion
120a: Second Central Ball
120b: inner surface of the second coil body 122: second insulating portion
123: second shielding plate 124: fitting projection
S1: Insertion space Br: Bridge
130: cover 130a: central through
134: fitting projection
M1: Magnetic core M1a: Middle
140: primary terminal block 140a: primary terminal hole
P1: Primary terminal pin 150: Secondary terminal block
150a: secondary terminal hole P2: secondary terminal pin
Br: Bridge
200: insulating structure
210: insulation distance extension member 211: first base
212,213: fitting bar 220: connector cover
221,222: left and right walls 223: roof
230: second base 240: upper insulating film
241: first upper diaphragm 242: first upper vertical membrane
243: second upper diaphragm 244: second upper vertical membrane
250: lower insulating film 251: first lower vertical film
252: lower inclined membrane 253: lower diaphragm
254: second lower diaphragm

Claims (4)

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 in a flat spiral pattern, a first central hole The first coil body 110 is formed of a first insulating portion 112 of synthetic resin material (110a) is formed and embedding the first flat coil 111 except for the first terminal (111a),
It is provided on the first coil body 110, the primary coil element (C1) for generating an induction current in the first coil body 110,
The primary side terminal block 140a is formed, and the primary side terminal block 140 formed integrally with the first insulating portion 112 at the front end of the first insulating portion 112,
A plurality of primary terminal pins P1 inserted into the terminal holes 140a of the primary terminal block 140 and connected to the primary coil element C1;
A secondary terminal block 150 formed at a rear end of the first insulating portion 112 and having a secondary terminal hole 150a,
A plurality of secondary terminal pins (P2) inserted into the secondary terminal hole (150a) of the secondary terminal block (150) and connected to the first terminal (111a);
It is formed on the rear end of the first insulating portion 112 and is configured to include a plate-shaped first vertical plate 113 for increasing the insulating distance between the secondary terminal pin P2 and the magnetic core M1,
The secondary terminal block 150, the transformer characterized in that the first vertical plate 113 is formed to protrude outward.
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 in a flat spiral pattern, a first central hole The first coil body 110 is formed of a first insulating portion 112 of synthetic resin material (110a) is formed and embedding the first flat coil 111 except for the first terminal (111a),
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,
It is provided between the first coil body 110 and the cover 130, the primary coil element (C1) for generating an induction current in the first coil body 110,
A primary terminal block 140a is formed, and is formed on at least one of the front ends of the first insulating part 112 or the front end of the cover 130, and the primary terminal blocks 140,
A plurality of primary terminal pins P1 inserted into the terminal holes 140a of the primary terminal block 140 and connected to the primary coil element C1;
A secondary terminal block 150 formed at a rear end of the first insulation portion 112 and having a secondary terminal hole 150a,
A plurality of secondary terminal pins (P2) inserted into the secondary terminal hole (150a) of the secondary terminal block (150) and connected to the first terminal (111a);
It is formed on the rear end of the first insulating portion 112 and is configured to include a plate-shaped first vertical plate 113 for increasing the insulating distance between the secondary terminal pin P2 and the magnetic core M1,
The secondary terminal block 150, the transformer characterized in that the first vertical plate 113 is formed to protrude outward.
The method according to claim 1 or claim 2,
It is formed at the rear end of the first insulating portion 112 is configured to further include a plate-shaped first vertical plate 113 for increasing the insulation distance between the secondary terminal pin (P2) and the magnetic core (M1),
The secondary terminal block 150 is formed to protrude outward from the first vertical plate 113,
In order to ensure that the plate-shaped first base 211 and the lower side of the first vertical plate 113 are interpolated and fitted, a pair of fitting bars spaced apart from the first base 211 and spaced apart and erected upwards The insulating distance extension member 210, which is composed of (212,213), is further included.
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 3,
Since the connector insertion space 220a is formed therein, the connector cover portion 220 made of synthetic resin for increasing the distance for insulation between the connector of the charger and the magnetic core M1 by enclosing the connector of the charger (not shown) is further provided. Transformer comprising the included.

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