KR100340424B1 - A Focus Unit of Fly Back Transformer - Google Patents

Abstract

In the focus unit of the flyback transformer, a focus unit is installed by installing a cover in which an output pin is integrally inserted in an output pin fixing groove formed at one side of the resistor pattern and a resistor pattern formed to minimize volume. The focus unit of the flyback transformer minimizes the size of the flyback and allows the coupling to be performed quickly. The technical configuration is that the ceramic substrate on which the three-shaped focus and the resistive pattern of the screen is printed is placed inside the main body of the focus unit. The pin fixing hole is formed at the inner diameter side center point of the resistor pattern, and the focus unit cover to which the output pin is pressed is fixed to one side of the ceramic substrate.

Description

A focus unit of flyback transformer

The present invention is a focus unit of a flyback transformer (hereinafter referred to as "FBT"), the resistance pin is formed so as to minimize the volume and the output pin is inserted integrally inserted into the output pin fixing groove formed on one side of the resistor pattern The present invention relates to a focus unit of a flyback transformer, which minimizes the size of the focus unit by installing a cover and quickly performs the coupling.

Conventionally known FBT generates a high voltage through the high and low pressure bobbins installed therein, and supplies the voltage generated by the bobbin to the CRT through an anode cable, which is installed on one side of the case of the FBT. The focus unit serves to change the focus and the screen voltage by using a slider formed to elastically support the resistor pattern after printing a resistor pattern having a predetermined shape on the volume substrate in the CRT.

In the conventional FBT focus unit structure related to the above technique, as shown in FIG. 1, a rotating piece (3) in which the focus volume knob 30 is integrally connected to the inside of the main body 20 of the focus unit 10 ( 40 is provided, the slider 50 having two contacts on one side thereof is mounted, and the ceramic substrate 70 on which the resistor pattern 60 composed of variable and center contacts is connected so as to be connected to the contacts of the slider 50. This is made of a configuration that is molded to be molded inside the main body 20 as an insulating resin.

In the conventional focus unit 10 as described above, in order to vary the focus and screen voltage supplied to the CRT, the user may turn the focus volume knob 30 protruding to the outside of the main body 20 in one direction. In this case, the slider 50 connected thereto is rotated integrally with the pivoting piece 40 to move along the trajectory of the resistor pattern 60 printed on the ceramic substrate 70 to vary the focus and screen voltage. Will be.

Meanwhile, one side contact of the slider 50 of the ceramic substrate 70 installed in the focus unit 10 is connected to the variable contacts 60a and 60b of the focus and screen resistor patterns printed on the ceramic substrate 70. It is connected to change the focus and screen voltage, and the other contact of the slider 50 is connected to the output terminal 60c, respectively, so as to withdraw the output value through a resistor.

However, in the focus unit 10 as described above, since the output terminal 60c has a resistor inserted as a connection structure of the lead through soldering, it is difficult to reduce the size, and leakage of epoxy occurs to improve the reliability of the connection. There was a disadvantage in that the process for reducing, and the output pin connection is increased.

In addition, since the size of the resistor pattern 60 is limited, there are many problems such as increasing the volume of the substrate 70 and increasing the volume of the entire focus unit 10 to counteract FBT slimming.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to easily combine the focus and screen output pins with the substrate on which the resistor pattern is formed, and to minimize the size of the substrate on which the resistor pattern is formed. It is possible to reduce the focus unit and reduce the focus unit, to prevent the leakage of epoxy, thereby reducing the reliability of the connection, and to provide a focus unit of the flyback transformer to reduce the process for connecting the output pin.

1 is an exploded view illustrating main parts of a conventional focus unit;

2A and 2B are main part schematic views showing a substrate and a cover of a focus unit according to the present invention;

3 is a schematic view showing an exploded state of a focus unit according to the present invention;

4 is a cross-sectional structural view showing a main part showing a coupling state of a focus unit according to the present invention;

Explanation of symbols on the main parts of the drawings

100 ... Volume knob 110,120 ... Resistor pattern

140 ... substrate 160 ... body

180 ... cover 200 ... output pin

210.Fixed

As a technical means for achieving the above object, the present invention provides a ceramic substrate on which the resistor pattern of the focus and the screen having a three-character shape is printed is installed inside the main body of the focus unit, and the pin is positioned at the inner diameter side center point of the resistor pattern. The ply is formed with a fixing hole, the focus unit cover is fixed to one side of the ceramic substrate, the ply made of a configuration to form a fixing hole on one side of the focus unit cover to press the fixing piece which is integrally formed with the output pin inside By providing a focus unit of the back transformer.

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

2A and 2B are main part schematic views showing a substrate and a cover of a focus unit according to the present invention;

Figure 3 is a schematic diagram showing an exploded state of the focus unit according to the present invention, Figure 4 is a cross-sectional structural view showing the main portion coupled state of the focus unit according to the present invention, the present invention, the through hole in one side of the main body 160 The rotating piece 100 is formed to form the 160a and the volume knob 100a is integrally connected, and the slider 100b is mounted on one side thereof so that the two contacts are electrically connected together.

The main body portion 160 of the focus unit 150 includes a ceramic substrate 140 on which the slider 100b of the pivoting piece 100a is in contact with the three-shaped focus and the resistor patterns 110 and 120 of the screen. The pin fixing holes 170 are formed at the inner diameter side center points of the resistor patterns 110 and 120, respectively.

In addition, a focus unit cover 180 is fixed to one side of the ceramic substrate 140, and a close contact hole 190 is formed on one side of the focus unit cover 180 so that the output pin 200 is integrated therein. It is made of a configuration in which the fixing piece 210 is formed to be pressed.

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

As shown in FIGS. 2 to 4, the focus unit having a focus formed in a triangular shape and a resistive pattern 110 and 120 of a screen is printed on an upper side of the ceramic substrate 140 so that the volume knob 100a is installed. It is fixed inside the main body 160 of 150 and is molded integrally.

In addition, the resistor patterns 110 and 120 are formed in a pin shape hole when the pin fixing holes 170 are formed in a З shape and the output pins 200 are inserted into the center points of the inner diameter side thereof, respectively. By adjusting the focus and screen voltage through the inserted output pin 200 and the resistor patterns 110 and 120, the volume increase of the ceramic substrate 140 generated when the output pin 200 is connected through a separate resistor is achieved. To minimize the size of the focus unit.

The focus unit cover 180 is fixed to one side of the ceramic substrate 140 on which the resistor patterns 110 and 120 are formed to protect the ceramic substrate 140 as well as to be fixed to the main body 160. In operation of the volume knob 100a, the focus voltage and the screen voltage are adjusted.

At this time, the focus unit cover 180 is inserted into the main body 160 by inserting the fixing piece 210 into which the output pin 200 is integrally pressed into the pin fixing hole 170 formed at one side of the cover 180. ), The output pin 200 is connected through the resistor patterns 110 and 120 of the ceramic substrate 140 and the slider 100b of the pivoting piece 100 to be fixed to the output pin 200 and the resistor pattern 110. The process for interconnecting the 120 is simplified.

As described above, according to the focus unit of the flyback transformer according to the present invention, the focus and screen output pins are easily coupled to the substrate on which the resistor pattern is formed by the coupling method by force injection, and the substrate on which the resistor pattern is formed. By minimizing the size of the material, it is possible to reduce the material cost and reduce the focus unit, and to prevent the leakage of epoxy, thereby reducing the reliability of the connection and reducing the process for connecting the output pin.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as provided by the following claims. I would like to clarify that those who have knowledge of this can easily know.

Claims (1)

A main body 160 on which a rotating piece 100 having a volume knob 100a is installed, on which a slider 100b having two contacts is mounted; The ceramic substrate 140 having the three-dimensional resistor patterns 110 and 120 printed thereon such that the slider 100b is in contact with each other, and the pin fixing hole 170 is formed at an inner diameter thereof. The focus unit of the flyback transformer, characterized in that it comprises a cover 180 for protruding the fixing piece 210 to be inserted into the pin fixing hole 170 so that the output pin 200 is press-fitted therein.