KR19990057470A - Flyback transformer - Google Patents

Abstract

The present invention relates to a flyback transformer, comprising: a first core having at least a first central axis and a plurality of first guide axes and formed into an approximately alphabetic (E) shape, and approximately stacked on the first central axis; In a flyback transformer including a disk-shaped thin film coil, the first central axis and the second guide axis extend in a length corresponding to the stack height of the thin film pattern coil, the first central axis and the second guide Since the second core having a substantially rectangular shape is positioned on the axis, that is, while extending the first central axis and the second guide axis of the first core to a length corresponding to the stacking height of the thin film pattern coil, By forming a structure in which the second core having a substantially rectangular shape is placed on the first central axis and the second guide axis, the leakage magnetic field can be minimized. To prevent the local temperature rise of the coil pattern, and has an excellent effect that can significantly improve the performance of the flyback transformer.

Description

Flyback transformer

The present invention relates to a flyback transformer, and more particularly, to extend the first center axis and the second guide axis constituting the first core to a length corresponding to the stack height of the thin film pattern coil, The present invention relates to a flyback transformer having a structure in which a second core having a substantially rectangular shape is positioned on an axis and a second guide axis to minimize leakage magnetic field and thereby prevent local temperature rise of the thin film pattern coil.

In general, a flyback transformer refers to a single-circuit 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 will be described with reference to FIGS. 1 and 2 as follows.

1 is an exploded perspective view showing a flyback transformer according to the prior art, Figure 2 is a cross-sectional view showing a flyback transformer according to the prior art.

As shown in FIG. 1, the flyback transformer 100 according to the related art includes a first central axis 111 and a plurality of first guide shafts 112 and is formed in an approximately alphabetic (E) shape. It has a first core 110, a second central axis 121 and a plurality of second guide shafts 122 and is formed in an approximately alphabetic (E) shape to face the first core (110) The second core 120 and the first central axis 111 and the second central axis 121 is formed of a substantially disk-shaped thin film pattern coil 130 stacked on the stack.

At this time, the first central axis 111 and the second central axis 121 of the first core 110 and the second core 120 which are positioned in mutually opposite shapes are mutually as shown in FIG. It can be seen that the leakage magnetic field is generated in the same direction as the arrow direction F due to the spaced distance (l).

This leakage magnetic field eventually affects the thin film pattern coil 130 and causes local temperature rise.

That is, the flyback transformer 100 according to the prior art has a spaced distance (l) at the time of mutual assembly of the first core 110 and the second core 120, thereby causing a temperature rise due to the leakage magnetic field here. In the end, there was a problem of greatly lowering the reliability of the flyback transformer 100.

Accordingly, the present invention was created to solve the above problems, and an object thereof is to extend the first central axis and the second guide axis of the first core to a length corresponding to the stacking height of the thin film pattern coil. At the same time, to provide a flyback transformer capable of minimizing the leakage magnetic field by forming a structure having a substantially rectangular shape of the second core on the first central axis and the second guide shaft.

1 is an exploded perspective view showing a flyback transformer according to the prior art.

Figure 2 is a cross-sectional view showing a flyback transformer according to the prior art.

3 is an exploded perspective view showing a flyback transformer according to the present invention.

4 is a cross-sectional view of a flyback transformer according to the present invention.

* Explanation of symbols for main parts of the drawings

200: flyback transformer 210: first core

211: first central axis 212: first guide axis

220: second core 230: thin film pattern coil

According to an aspect of the present invention, there is provided a flyback transformer comprising: a first core having at least a first central axis and a plurality of first guide axes and formed into an approximately alphabetic (E) shape, and the first central axis; In the flyback transformer comprising a substantially disk-shaped thin film pattern coil stacked on the stack, wherein the first central axis and the second guide axis is extended to a length corresponding to the stack height of the thin film pattern coil, the first center It is a basic feature of the technical configuration that the second core having a substantially rectangular shape is positioned on the shaft and the second guide shaft.

Hereinafter, a preferred embodiment of the flyback transformer according to the present invention will be described with reference to FIGS. 3 and 4.

Figure 3 is an exploded perspective view showing a flyback transformer according to the present invention, Figure 4 is a cross-sectional view showing a flyback transformer according to the present invention.

As shown in FIGS. 3 and 4, the flyback transformer 200 according to the present invention has a first central axis 211 and a plurality of first guide axes 212 and has an approximately alphabetic (E) shape. Formed of a first core 210 and a substantially disk-shaped thin film pattern coil 230 stacked on the first central axis 211.

In this case, the first central axis 211 and the second guide axis extends to a length corresponding to the stacking height of the thin film pattern coil 230, the shape of a substantially rectangular shape on the first central axis 211 and the second guide axis. Of the second core 220 is located.

Here, the gap between the first core 210 and the second core 220 is minimized as shown in FIG. 4 so that the leakage magnetic field can be minimized, thereby adversely affecting the thin film pattern coil 230. It can be seen that it can prevent.

As described above, according to the flyback transformer according to the present invention, the first central axis and the second guide axis of the first core are extended to a length corresponding to the stacking height of the thin film pattern coil, and the first central axis and the first 2 By forming a structure in which a substantially rectangular second core is placed on the guide shaft, the leakage magnetic field can be minimized to prevent local temperature rise of the thin film pattern coil and to further improve the performance of the flyback transformer. That has an excellent effect.

Claims (1)

A first core having at least a first central axis and a plurality of first guide axes and formed into an approximately alphabetic (E) shape, and a substantially disc-shaped thin film pattern coil stacked on the first central axis. In the flyback transformer, The first central axis and the second guide axis extend in length corresponding to the stacking height of the thin film pattern coil, A flyback transformer according to claim 1, wherein a substantially rectangular second core is positioned above the first central axis and the second guide axis.