KR20000034407A - Device for preventing movement of ferrite core in fly back transformer - Google Patents

Abstract

PURPOSE: A device for preventing the movement of a ferrite core in an FBT(Fly Back Transformer) is provided to firmly fix the ferrite core to one side of an FBT case while preventing the movement of the ferrite core and to obtain stable inductance value of the ferrite core. CONSTITUTION: Rectangular core supporting tools(160) are integrally formed with an FBT case(110) for being installed at the upper and the lower directions of a gap fixing piece(150) for preventing distortion while combining an upper and a lower ferrite cores(130a,130b). Therefore, the both sides of the ferrite cores are firmly inserted between the core supporting tools to be fixed. Herein, the core supporting tools contain plural forcible insertion projections for fixing the ferrite cores more firmly.

Description

Ferrite Core Flow Preventer on Flyback Transformer

The present invention is a flyback transformer (hereinafter referred to as "FBT"), which is a high voltage generator for supplying high voltage to a CRT of a television and a monitor, wherein the flow of ferrite core installed inside the FBT serves as a magnetic circuit. The present invention relates to a device for preventing ferrite core flow to prevent a gap. In particular, a gap fixing piece contacting upper and lower ferrite cores is horizontally oriented to one side of an FBT case into which bobbins are interpolated, and both upper and lower sides of the gap fixing piece have upper and lower ferrite cores. Since the core supporters for supporting and fixing both sides are protrudingly installed, one end of the upper and lower ferrite cores is connected to a gap fixing piece that is addressed to the FBT case when the ferrite cores are divided into upper and lower parts to one side of the case of the FBT. It can be contacted automatically to maintain the gap without inserting a separate gap Locking, of course, the core support is installed on the upper and lower sides of the gap fixing piece is fixed to both sides of the ferrite core to prevent the left and right flow of the ferrite core installed to one side of the FBT case, so that the FBT of the It relates to a ferrite core flow preventing device.

In the conventional known ferrite core structure of FBT, as shown in FIG. 1, a ferrite core 23 divided into upper and lower parts is installed on one side of the case of the FBT 21 in which the low-pressure bobbin 22 is inserted. A gap G is formed between the upper and lower ferrite cores 23 to maintain a constant inductance value, and the elastic U clip 24 is coupled to one side of the ferrite core 23 so that one end thereof has a low pressure bobbin 22. It is made of a structure for supporting and fixing the ferrite core 23 inserted into the inside.

As shown in FIG. 2, the conventional ferrite core 23 having the above-described coupling structure has a ferrite core 23 exposed to the outside of the FBT case in a state where one end is inserted into the low pressure bobbin 22 of the FBT 21. The magnetic circuit of the FBT 21 is configured through the above, and at this time, the upper and lower sides of the ferrite core 23 are attached to the case of the FBT 21 through the adhesive D.

However, the ferrite core 23, which is divided into upper and lower parts as described above and is coupled while maintaining a constant gap G, is fixed to the inside of the upper and lower cores by simply fixing the position of the ferrite core 23 by an adhesive. By again tightening with the U clip 24, the upper and lower cores are warped, and accordingly the lower ferrite cores are staggered with each other, as well as fixing them by high heat generated from the ferrite cores during FBT operation. Deterioration of the adhesive material (D) is generated, the flow of ferrite core is generated, accordingly there is a lot of problems, such as the inductance value can not be obtained and the electrical properties of the FBT is lowered.

The present invention has been made in order to improve the various problems as described above, the object is, when the combination of the ferrite core is divided into the upper and lower parts to one side of the case of the FBT, the gap fixing piece addressed to the FBT case One end of the upper and lower ferrite cores are in contact with each other so that the gap can be automatically maintained without the need to insert a separate gap paper, and the core supports installed on the upper and lower sides of the gap fixing piece support and fix both sides of the ferrite core. In addition, the left and right flow of the ferrite core installed to one side of the FBT case is prevented to be further firmly fixed, and to provide a ferrite core flow preventing device of the FBT that can obtain a stable inductance value of the ferrite core.

1 is a schematic perspective view showing a coupling state of a ferrite core installed in a case of a general FBT.

Figure 2 is a state coupling state of the ferrite core end is inserted into the conventional FBT low-pressure bobbin.

Figure 3 is a perspective view of the installation state of the ferrite core support and the gap fixing piece installed on one side of the FBT case according to the present invention.

Figure 4 is a main portion coupling state of the ferrite core coupling portion installed on one side of the present FBT case.

Figure 5 is a front cross-sectional view of the ferrite core coupling portion of the present invention.

<Description of Symbols for Major Parts of Drawings>

110 ... FBT case 120 ... bobbin

130 ... ferrite core 130a ... top ferrite core

130b ... lower ferrite core 140 ... U clip

150 ... gap holder 160 ... core support

170 ... Indentation protrusion

As a technical configuration for achieving the above object, the present invention relates to a ferrite core flow preventing device for preventing the flow of ferrite core installed inside the FBT to perform the role of a magnetic circuit, in particular, the bobbin interpolation The gap fixing piece in which the upper and lower ferrite cores come into contact with the one side of the FBT case is horizontally oriented, and the upper and lower sides of the gap fixing piece protrude and install a core support for supporting both sides of the upper and lower ferrite cores. By providing a ferrite core flow preventing device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view of the installation state of the ferrite core support and the gap fixing piece installed on one side of the FBT case according to the present invention, Figure 4 is a main portion coupling state diagram of the ferrite core coupling portion installed on one side of the FBT case of the present invention, the bobbin therein Ferrite core 130 is divided into the upper and lower parts on one side of the FBT case 110 in which 120 is built, and maintains a constant inductance value between the upper and lower ferrite cores 130a and 130b. Form a gap (G), and one side of the ferrite core 130 is elastic U clip 140 is fastened to one end is installed to support the ferrite core 130 is inserted into the inside of the low-pressure bobbin (120). .

In addition, one side of the upper and lower ferrite cores (130a, 130b) contact the one side of the gap fixing piece 150 in the horizontal direction, the upper side of the gap fixing piece 150, On both lower sides, core support holes 160 for supporting and fixing both sides of upper and lower ferrite cores 130a and 130b are protruded.

The core support 160 for supporting and fixing the upper and lower ferrite cores 130a and 130b includes a configuration in which a plurality of indentation protrusions 170 press-fit the side surface of the ferrite core to the inner core contact surface.

Referring to the operation and effect of the present invention made of such a configuration as follows.

3 to 5, the high-pressure and low-pressure bobbin 120 is internally divided into upper and lower parts on one side ferrite core 130 coupling portion of the FBT case 110 to draw out the high voltage. Ferrite cores 130a and 130b are positioned to maintain a constant inductance value by the gap G formed between the upper and lower ferrite cores 130a and 130b.

At this time, one side of the ferrite core 130 is elastic U clip 140 is fastened so that one end of the ferrite core 130 is fixed to support the ferrite core 130 in the state inserted into the bobbin (2). .

On the other hand, the one side of the FBT case 110, one end of the upper and lower ferrite cores (130a, 130b) so that each of the contact, the rectangular gap fixing piece consisting of the injection molding integral with the FBT case 110 ( 150) is spoken in the horizontal direction. Accordingly, the upper and lower ferrite cores 130a and 130b need not form a gap G by using a gap between the upper and lower ferrite cores 130a and 130b to maintain a constant inductance. In assembling the ferrite cores 130a and 130b, the gap can be automatically maintained by the gap fixing piece 150.

In addition, when preventing the flow that is twisted when the upper and lower ferrite cores (130a, 130b) is coupled, the core support 160 of the rectangular shape to the upper and lower sides of the gap fixing piece (150). By protruding and installing the injection molded body integral with the FBT case 110, both sides of the upper and lower ferrite cores (130a, 130b) between the core support 160 can be tightly inserted and supported.

In particular, the core support 160 for supporting and fixing the upper and lower ferrite cores 130a and 130b is a ferrite core contact surface, which is an inner surface thereof, and press-fits the side surfaces of the upper and lower ferrite cores 130a and 130b. Due to the plurality of indentation protrusions 170 so as to be able to do so, the upper and lower ferrite cores (130a, 130b) coupled between the core support 160 is supported by the indentation protrusions 170 in a more solid state. Can be fixed.

Accordingly, the gap fixing piece 150 and the core support 160 are installed on one side of the ferrite core 130 coupling portion of the FBT case 110, and the upper and lower ferrite cores 130a are divided into upper and lower portions. While the gap of 130b) can be automatically formed, the ferrite core can be firmly supported and fixed.

As described above, according to the FBT ferrite core flow preventing device according to the present invention, when the ferrite core is divided into the upper and lower parts to one side of the case of the FBT, the upper and lower ferrite core to the gap fixing piece addressed to the FBT case One end of the contact is able to maintain the gap automatically without the need to insert a separate gap, as well as the core support is installed on the upper and lower sides of the gap fixing piece to support and fix both sides of the ferrite core, one side of the FBT case It prevents the left and right flow of the ferrite core to be installed and can be fixed more firmly, and has an excellent effect of obtaining a stable inductance value of the ferrite core.

Claims (2)

Ferrite core 130 is divided into upper and lower parts on one side of the FBT case 110 in which the bobbin 120 is internally installed, and a constant inductance value between the upper and lower ferrite cores 130a and 130b. Forming a gap (G) for maintaining the, and the ferrite core 130 is fixed to one side of the elastic U clip 140 is fastened to support the ferrite core 130 is inserted into the inside of the low-pressure bobbin 120 In the ferrite core of the FBT installed all the time, The gap fixing piece 150 contacting one end of the upper and lower ferrite cores 130a and 130b to one side of the FBT case 110 is spoken in a horizontal direction, and the upper and lower sides of the gap fixing piece 150 are raised. The ferrite core flow prevention apparatus of the FBT, characterized in that the core support (160) protruding and installed to support both sides of the upper and lower ferrite core (130a, 130b). The method of claim 1, wherein the core support 160 for holding and fixing the upper and lower ferrite core (130a, 130b), each of the indentation projections 170 for pressing the side of the ferrite core to the inner core contact surface, respectively FBT ferrite core flow preventing device, characterized in that the dog bulge.