KR100285107B1 - Coil Structure of Flyback Transformer - Google Patents

Abstract

The present invention relates to a coil structure of a flyback transformer. The present invention relates to a coil structure of a flyback transformer, and includes a conductor pattern printed on the bottom thin film insulating film elongated in a substantially rectangular shape with a plurality of lines at equal intervals, and the high frequency induction on the bottom thin film insulating film with the conductor pattern interposed therebetween. A coil structure of a flyback transformer including an upper thin film insulating film that is heated and bonded to the coil structure, the first conductor exposed part exposed by locally peeling the upper thin film insulating film positioned at one end of the conductive pattern, and the conductive pattern. And a second conductor exposing portion exposed by locally peeling off the bottom thin film insulating film located at the other end of the first conductor exposing portion and the second conductor exposing portion interconnected at both ends of the conductor pattern. It is divided into upper thin film insulating film and lower thin film insulating film respectively By molding to the avoided structure, the second conductor exposed portion can be naturally connected on the first conductor exposed portion in the winding direction of the conductor pattern without being bent, thereby preventing a phenomenon of locally increasing impedance or rapidly rising temperature. There is an excellent effect of improving the reliability of the product.

Description

Coil Structure of Flyback Transformer

The present invention relates to a coil structure of a flyback transformer, and more particularly, the first conductor exposed portion and the second conductor exposed portion which are interconnected are divided into upper thin film insulating films and lower thin film insulating films respectively positioned at both ends of the conductor pattern. A coil structure of a flyback transformer molded into a tilted structure.

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 high voltage using a horizontal synchronization signal in a television receiver, and is 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.

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

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. Due to the use of the copper wire coil made of the insulating portion 20 to perform the electrical insulation function, the volume is large, the efficiency is low, and the stability of the high voltage (high voltage regulation) was greatly reduced.

Therefore, in recent years, the coil has been developed and used as a thin film patterned structure. The thin film pattern coil will be described with reference to FIGS. 3 and 4 as follows.

3 is a plan view showing a coil structure of a flyback transformer according to the prior art, and FIG. 4 is a cross-sectional view taken along line AA ′ of FIG. 3.

As shown in FIGS. 3 and 4, the coil structure of the flyback transformer according to the related art includes a bottom thin film insulating film 100 elongated in a substantially rectangular shape and a plurality of lines on the bottom thin film insulating film 100. The printed circuit pattern 200 is patterned at intervals, and the upper surface thin film insulating film 300 is bonded by high frequency induction heating on the bottom thin film insulating film 100 with the conductive pattern 200 therebetween.

At this time, both ends of the conductor pattern 200 are provided with a first conductor exposed portion (a) and a second conductor exposed portion (b), which are exposed by locally peeling the upper thin film insulating film 300 to enable electrical connection. And bent in the 90 ° direction on each side so as to be connectable with other component elements.

Referring to FIG. 5, the operation of the coil structure of the flyback transformer according to the related art having the above configuration will be described.

5 is a state diagram showing the coil structure of the flyback transformer according to the prior art.

First, the first conductor exposed portion (a) exposed at one end of the conductor pattern 200 is placed on a bobbin provided with a magnetic material, and wound at the number of times to obtain a voltage to be boosted, and then the conductor pattern 200. The second conductor exposed portion (b) exposed at the other end of is connected to the first conductor exposed portion (a).

In this case, the first conductor exposed part (a) and the second conductor exposed part (b) have a structure in which both ends of the upper thin film insulating film 300 are peeled off locally, so that their forming directions are the same. Since the film 300 is molded only in the direction in which the film 300 is present, as shown in FIG. 5, the second conductor exposed portion b is placed on the first conductor exposed portion a after winding a plurality of times in the bobbin. When the second conductor exposed portion (b) is to be folded by 180 °, the first conductor exposed portion (a) can be connected to the first conductor exposed portion (a). There is a big disadvantage that the impedance in the part rises sharply and causes local temperature rise.

Accordingly, the present invention was created to solve the above problems, and the object of the present invention is to connect the first conductor exposed portion and the second conductor exposed portion to the upper surface thin film insulating film and the lower surface of the conductor pattern. A flyback transformer and a coil structure are formed by dividing each into thin film insulation films to form a stripped structure so that the second conductor exposed portion can be naturally connected to the wound direction of the conductor pattern on the first conductor exposed portion without being bent. Is in.

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 prior art.

4 is a cross-sectional view taken along the line A-A 'of FIG.

5 is a state diagram showing the coil structure of the flyback transformer according to the prior art.

6 (a) and 6 (b) are a plan view and a bottom view of the coil structure of the flyback transformer according to the present invention, respectively.

7 is a use state diagram showing the coil structure of the flyback transformer according to the present invention.

* Explanation of symbols for main parts of the drawings

100: bottom thin film insulating film 200: conductor pattern

300: upper thin film insulating film A: first conductor exposed portion

B: second conductor exposed portion

The coil structure of the flyback transformer according to the present invention for achieving the above object is a conductor pattern printed on the bottom thin film insulating film elongated in a substantially rectangular shape at equal intervals of a plurality of lines, and the bottom thin film with the conductor pattern therebetween. In the coil structure of the flyback transformer comprising a top thin film insulating film bonded to the high frequency induction heating on the insulating film, the first conductor exposed portion exposed by locally peeling off the conductor pattern and the top thin film insulating film located at one end And a second conductor exposing portion exposed by locally peeling the bottom thin film insulating film positioned at the other end of the conductor pattern.

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

6 (a) and 6 (b) are a plan view and a bottom view of the coil structure of the flyback transformer according to the present invention, respectively, and the same name and the same reference numeral will be used for the same configuration having the same function as the conventional configuration. do.

The coil structure of the flyback transformer according to the present invention is as shown in Figure 6 (a), (b), the bottom of the thin film insulating film 100 elongated in a substantially rectangular shape, on the bottom thin film insulating film 100 The upper surface thin film insulating film 300 is formed of a conductive pattern 200 printed at a uniform interval of a plurality of lines, and the high frequency induction heating is bonded onto the bottom thin film insulating film 100 with the conductive pattern 200 interposed therebetween.

In this case, a first conductor exposed portion A is formed at one end of the conductive pattern 200 to expose the upper thin film insulating film 300 locally, and at the other end of the conductor pattern 200, the bottom thin film insulation. The second conductor exposed portion B is formed by locally peeling off the film 100.

The operation of the coil structure of the flyback transformer according to the present invention having the above configuration will be described with reference to FIG.

7 is a use state diagram showing the coil structure of the flyback transformer according to the present invention.

First, the first conductor exposed portion A exposed at one end of the conductor pattern 200 is placed on a bobbin provided with a magnetic material, and wound at the number of times to obtain a voltage to be boosted, and then the conductor pattern 200. The second conductor exposed portion B exposed at the other end of is connected to the first conductor exposed portion A.

In this case, the first conductor exposed portion (A) and the second conductor exposed portion (B) are divided into ends of the upper thin film insulating film 300 and the lower thin film insulating film 100, respectively, so that the local stripping structure As shown in FIG. 7, the second conductor exposing portion B can be connected to the first conductor exposing portion A in the direction in which the conductor pattern 200 is wound, so that the impedance increases locally or the temperature rises rapidly. It can be seen that this phenomenon is prevented.

As described above, according to the coil structure of the flyback transformer according to the present invention, the first conductor exposed portion and the second conductor exposed portion which are interconnected are divided into upper thin film insulating films and lower thin film insulating films respectively positioned at both ends of the conductor pattern. By forming the stripped structure, the second conductor exposed portion can be naturally connected on the first conductor exposed portion in the winding direction of the conductor pattern without being bent, thereby preventing a phenomenon in which the impedance rises locally or the temperature rises rapidly. There is an excellent effect of improving the reliability of the product.

Claims (1)

A ply made of a conductive pattern printed on the bottom thin film insulating film elongated in a substantially rectangular shape and patterned at equal intervals of a plurality of lines, and a top thin film insulating film bonded to the bottom thin film insulating film by high frequency induction heating on the bottom thin film insulating film. In the coil structure of the back transformer, the first conductor exposed portion exposed by locally peeling off the upper thin film insulating film located at one end of the conductor pattern, and the local peeling of the bottom thin film insulating film located at the lower end of the conductor pattern The coil structure of the flyback transformer, characterized in that it comprises a second conductor exposed portion exposed.

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