KR100260845B1 - Flyback transformer coil structure - Google Patents

Abstract

PURPOSE: A coil structure of a flyback transformer is provided to be capable of minimizing the volume of a coil and simplifying a winding process by severally winding first/second upper/lower conductor pattern parts on both sides of upper/lower and immediate thin insulating films. CONSTITUTION: I/O exposure conductors(a,b) is formed by locally exposing both ends of an upper thin insulating film(100) of rectangular shape. First/second upper conductor pattern parts(210,220) are severally wound in a clockwise from the conductors(a,b) toward a center. An intermediate thin insulating film is attached under the thin insulating film(100). First/second conductive through holes(410,420) are respectively connected to one ends of the conductor pattern parts(210,220) to be extended downwardly through the intermediate thin insulating film. First/second lower conductor pattern parts are severally wound in a counter clockwise on a bottom of the intermediate thin insulating film. A bottom thin insulating film is bonded under the intermediate thin insulating film.

Description

Coil Structure of Flyback Transformer

The present invention relates to a coil structure of a flyback transformer, and more particularly, a first and a second upper conductor pattern portion having an upper exposed surface and an intermediate thin film insulating film interposed therebetween with the input exposed conductor portion and the output exposed conductor portion as starting points, respectively. A coil structure of a flyback transformer having a secondary winding formed by overlapping the first and second lower conductor pattern portions in a shape wound several times.

In general, a flyback transformer refers to a single winding transformer for obtaining a high voltage for a water pipe using pulses generated during the return period of a horizontal deflection output in a television receiver, and is also called a horizontal output transformer.

Conventional flyback transformers as defined above can be used in a variety of applications, in particular, to generate a high voltage using a horizontal synchronization signal in a television receiver, it is also widely used in oscilloscopes and monitors.

The flyback transformer used for this purpose is composed of a primary winding and a secondary winding, and a core made of a magnetic material is usually configured to magnetically connect them, and the degree of boosting is caused by the ratio of the primary winding and the secondary winding. Is determined.

Here, the shape of the coil according to the prior art used for the primary winding and the secondary winding will be described with reference to FIGS. 1 and 2.

1 is a perspective view showing a coil structure of a general flyback transformer, and FIG. 2 is an enlarged side cross-sectional view showing a coil structure of a general flyback transformer.

As shown in FIGS. 1 and 2, the coil structure of a typical flyback transformer has an electrically insulating function applied to the conductor portion 10 elongated in a substantially cylindrical shape and the outer ring of the conductor portion 10. It consists of an insulating portion 20 to perform.

A conventional coil having the above structure is wound and used a plurality of times in the primary side winding and the secondary side winding, respectively, while maintaining a predetermined temperature (38 ° C. ± 1) so that the bending is good.

In this case, the magnetic material wound on the primary winding and the secondary winding is manufactured by overlapping or rolling thin silicon steel sheets in order to reduce the loss of magnetic lines and heat generation. In addition, the primary winding has a copper wire having a diameter of 0.5 mm to 1.0 mm wound around the secondary winding of 150 to 500 times to facilitate heat dissipation, and the secondary winding has a 0.05 mm to 0.1 mm copper wire of the magnetic material. Each layer is insulated and wound around 13,000 to 20,000 times, and the ratio between the primary and secondary windings is typically about 60 to 100.

However, the primary side winding and the secondary side winding of the flyback transformer according to the related art, which generate a high pressure, are applied to the conductor portion 10 and the outer ring of the conductor portion 10 elongated in a substantially cylindrical shape as described above. Since the copper wire coil made of the insulating portion 20 to perform the electrical insulation function has a disadvantage that the bulky and heavy weight.

Thus, the present invention was created to solve the above problems, the object is that the first and second upper conductor pattern portion between the upper and lower and intermediate thin film insulating film formed of a polyimide or polyester system between And a coil structure of a flyback transformer having secondary windings which may minimize the volume of the coil and simplify the winding operation by overlapping the first and second lower conductor pattern portions in a shape wound several times.

1 is a perspective view showing the coil structure of a typical flyback transformer.

2 is an enlarged side cross-sectional view showing the coil structure of a typical flyback transformer.

3 is a plan view showing a coil structure of a flyback transformer according to the present invention.

Figure 4 is a bottom view showing the coil structure of the flyback transformer according to the present invention.

5 (a) and 5 (b) are enlarged side cross-sectional views taken along line a-a 'and b-b' of FIG. 3, respectively.

* Explanation of symbols for main parts of the drawings

100: upper thin film insulating film 210: first upper conductor pattern portion

220: second upper conductor pattern portion 300: intermediate thin film insulating film

410: first through conductor hole 420: second through conductor hole

510: first lower conductor pattern portion 520: second lower conductor pattern portion

600: bottom thin film insulation film a: input exposed conductor portion

b: output exposed conductor portion

In the coil structure of the flyback transformer according to the present invention for achieving the above object, in the coil structure of the flyback transformer for winding a plurality of times to generate a high voltage to implement the primary side winding and the secondary side winding, the secondary side The winding has an upper rectangular insulating film having a substantially rectangular shape, an input exposed conductor portion and an output exposed conductor portion exposed by locally peeling both ends of the upper thin film insulating film, respectively, and the input exposed conductor portion and the output exposed conductor portion, respectively. The upper thin film insulating film having the first upper conductor pattern part and the second upper conductor pattern part wound around the center in the clockwise direction a plurality of times as a starting point, and the first upper conductor pattern part and the second upper conductor pattern part interposed therebetween. An intermediate thin film insulating film bonded to the bottom surface of the substrate by high frequency induction heating, and the first upper conductor pattern portion and the second upper conductor plate A first through hole and a second through conductor hole respectively connected to the end of the turn part and extending downward through the intermediate thin film insulating film, and connected to the first through hole and the second through hole, respectively. The first lower conductor pattern portion and the second lower conductor pattern portion, which are wound on the outer surface of the intermediate thin film insulating film in a plurality of times in the direction of the outer layer, are connected to each other, and the first lower conductor pattern portion and the second lower conductor pattern portion are interposed therebetween. It is a basic feature of the technical configuration that is made of a thin film insulating film to be bonded to the high frequency induction heating to the lower surface of the intermediate thin film insulating film.

In the above configuration, the first through conductor hole and the second through conductor hole connecting the first upper conductor pattern portion and the second upper conductor pattern portion to the first lower conductor pattern portion and the second lower conductor pattern portion, respectively, It is preferable that it is 2-4.

Hereinafter, a preferred embodiment of the coil structure of the flyback transformer according to the present invention will be described with reference to FIGS. 3 to 5.

3 is a plan view showing a coil structure of a flyback transformer according to the present invention, and FIG. 4 is a bottom view showing a coil structure of a flyback transformer according to the present invention, and FIGS. 5 (a) and 5 (b) are diagrams of FIG. It is an enlarged side cross-sectional view which cuts aa 'and bb', respectively.

The coil structure of the flyback transformer according to the present invention relates to a secondary side winding which is structurally improved apart from the primary winding wound directly on a core made of a magnetic body.

The secondary winding is formed of a polyimide or polyester system to expose the upper thin film insulating film 100 having a substantially rectangular shape and locally peeled both ends of the upper thin film insulating film 100, respectively. A plurality of windings in the clockwise direction are rotated around the center with the input exposed conductor portion (a) and the output exposed conductor portion (b) and the input exposed conductor portion (a) and the output exposed conductor portion (b) respectively as starting points. The upper thin film insulating film having the first upper conductive pattern portion 210 and the second upper conductive pattern portion 220 and the first upper conductive pattern portion 210 and the second upper conductive pattern portion 220 interposed therebetween. The intermediate thin film insulating film 300 adhered to the bottom surface of the substrate 100 by high frequency induction heating and connected to ends of the first upper conductive pattern portion 210 and the second upper conductive pattern portion 220, respectively. The first pipe extending through the insulating film 300 in the downward direction Connected to the through-hole 410 and the second through-conductor hole 420 and the first through-conductor hole 410 and the second through-conductor hole 420, respectively, to the lower surface of the intermediate thin film insulating film 300. High frequency induction heating is performed on the lower surface of the intermediate thin film insulating film 300 with the first lower conductor pattern portion 510 and the second lower conductor pattern portion 520 interposed therebetween and wound multiple times in the outer side also. The adhesive is made of a thin film insulating film 600.

In this case, the first upper conductor pattern portion 210 and the second upper conductor pattern portion 220 and the first lower conductor pattern portion 510 and the first lower conductor pattern portion 520 are connected to each other. The through conductor holes 410 and the second through conductor holes 420 are formed in plural in order to strengthen the mutual electrical connection force.

The coil of the flyback transformer according to the present invention formed as described above has a first upper conductor pattern portion 210, a second upper conductor pattern portion 220, and a first lower conductor pattern portion with an intermediate thin film insulating film 300 interposed therebetween. 510 and the second lower conductor pattern portion 520 is provided with a double coiled coil pattern to maintain the characteristics of the stable coil, it is possible to manufacture a superimposed coil pattern of triple or more than four It can be seen that the operation of the automated process can be easily achieved.

The rectifier diodes not shown are located in series in the input exposed conductor part (a) or the output exposed conductor part (b) provided between the secondary windings overlapped by three or more of the triples, and then pressed together. The connection allows for a natural electrical connection to be maintained.

As described above, the coil structure of the flyback transformer according to the present invention has an input exposed conductor part (a) and an output exposed conductor part (b) with an upper and lower surfaces formed of polyimide or polyester and an intermediate thin film insulating film 300 interposed therebetween. ) As a starting point to form a coil pattern in a shape in which the first and second upper conductor pattern portions 220 and the first and second lower conductor pattern portions 520 are wound a plurality of times. It can be easily superimposed and has an excellent effect of automating production while maintaining stable characteristics of the coil.

In addition, since the coil has a thin film shape, there is a useful effect that the wound volume is minimized and the work process is further simplified.

Claims (2)

In the coil structure of the flyback transformer for winding a plurality of times to generate a high voltage to implement the primary winding and the secondary winding, the secondary winding is a top surface insulating film 100 having a rectangular shape and the top surface An input exposed conductor portion (a) and an output exposed conductor portion (b) exposed by locally peeling both ends of the thin film insulating film 100, respectively, and the input exposed conductor portion (a) and the output exposed conductor portion (b), respectively. The first upper conductor pattern portion 210 and the second upper conductor pattern portion 220 wound around a plurality of times clockwise toward the center as a starting point, and the first upper conductor pattern portion 210 and the second upper conductor pattern. The intermediate thin film insulating film 300 bonded to the lower surface of the upper thin film insulating film 100 by induction heating and having the upper part 220 interposed therebetween, the first upper conductive pattern part 210 and the second upper conductive pattern. Each of which is connected to an end of the part 220 The first through conductor hole 410 and the second through conductor hole 420 extending downward through the thin film insulating film 300, and the first through conductor hole 410 and the second through conductor hole 420. A first lower conductor pattern portion 510 and a second lower conductor pattern portion 520 connected to the lower surface of the intermediate thin film insulating film 300 in a plurality of windings in an outer lattice direction, respectively; Including the first lower conductor pattern portion 510 and the second lower conductor pattern portion 520 between the lower surface insulating film 600 which is inductively heated and bonded to the lower surface of the intermediate thin film insulating film 300. Coil structure of a flyback transformer, characterized in that made. The method of claim 1, wherein the first upper conductor pattern portion 210 and the second upper conductor pattern portion 220, the first lower conductor pattern portion 510 and the second lower conductor pattern portion 520, respectively, The first through conductor hole 410 and the second through conductor hole 420 to be connected are two to four coil structures of the flyback transformer.

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