KR20000065666A - Focus pack of fly back transformer - Google Patents

Abstract

PURPOSE: A focus pack of a flyback transformer is provided to reinforce the insulation property of a volume substrate(120) without hardening process or inserting an insulating resin. CONSTITUTION: A focus pack of a flyback transformer includes a volume substrate(120), focus and screen resistor patterns(130,130'), an aperture(140), an arc closing member(150), and an arc compartment(170). The volume substrate(120) is implemented inside of the flyback transformer(FBT) focus pack. The focus and screen resistor patterns(130,130') are curved to be formed on the upper surface of the volume substrate. The aperture(140) is formed on the focus and screen resistor pattern curve whose variable touch point is rotatable with a reference of a central point of the volume slider. The arc closing member(150) is formed on one side of a pattern connector(130'') which connects the focus and screen resistor patterns curved on the upper surface of the volume substrate. The arc compartment(170) is inserted in the arc closing member of the volume substrate by coming out of the rear surface of the case(160) of the focus pack(110).

Description

FOCUS PACK OF FLY BACK TRANSFORMER}

The present invention provides a focus pack for a flyback transformer (hereinafter referred to as "FBT"), which is a high voltage generator for supplying a high voltage to a CRT of a TV and a monitor, while increasing a breakdown voltage of a volume substrate installed inside a focus pack of the FBT. The focus pack of the FBT, which enables the size of the lens to be miniaturized, and includes, in particular, the center of the bent portion of the focus and the screen resistor pattern that is at least one sweeped above the volume board installed inside the focus pack. An opening is formed by including a part of a virtual straight line connecting the input terminal and the output terminal of the pattern, and an arc-shaped closed part is formed at one side of the pattern connection part connecting the focus and the screen resistor pattern of the volume board, and protrudes to the back of the case. Since the arc-shaped bulkhead is inserted into the arc-shaped closed part to protrude, the FBT Although the volume board of the CUST pack is configured in a small size, the withstand voltage between the resistor patterns is increased, and the manufacturing process of the volume board is simplified to easily and easily eliminate the need to inject a separate insulating resin for insulation into the focus pack. It is about the focus pack of the FBT that makes it possible to manufacture.

Conventionally known FBT is to generate a high voltage through the high pressure and low pressure bobbins installed therein, and to supply a high voltage to the CRT via an anode cable, the focus pack is installed on one side of the case of the FBT in the CRT It is to change the focus and screen voltage.

In the structure of the conventional FBT focus pack related to such a technique, as shown in FIG. 1, the pivoting piece 40 which is spoken with the focus volume knob 30 inside the main body 20 of the focus pack 10 is provided. A slider 50 having two contacts on the upper side thereof is installed, and a resistor pattern 60 having a variable and center contact formed to be connected to the contact of the slider 50 is printed on the volume substrate 70. After being installed on the rear surface of the main body portion 20 is made of a configuration to be molded as an insulating resin.

In the conventional focus pack 10 having the above configuration, when the focus volume knob 30 protruding to the outside of the main body 20 is turned by hand to vary the focus and screen voltage in the CRT, The spoken slider 50 rotates integrally with the rotatable piece 40 to vary the voltage along the sweep resistor pattern 60 printed on the volume substrate 70.

2 is a view illustrating a volume substrate 70, which is a ceramic substrate installed in a conventional focus pack 10, in which a contact point 61 in the resistor pattern 60 generates an output focus voltage. It is placed between the axis 63 of the 62 and the circular resistor pattern 60, the contact point 61 is rotated about the axis (63).

At this time, when a high voltage of about 5KV-10KV is applied at the input terminal 67, a high voltage is applied between the input terminal 67 and the earth 66, and the output focus 64 voltage is applied to the axis 63. It is transmitted through the contact point 61 that rotates about. As described above, the voltage of the output screen 65 is configured by the axis 69 of the contact point 61 ', and the dropped voltage appears through the contact point 61'.

However, a potential difference occurs between the resistor and the resistor of the output focus 64 due to the contact point 61 curved along the curved resistor pattern 60, and the resistor and the curved resistor pattern of the output focus 64 ( The distance between 60 is an important variable indicating the withstand voltage characteristic.

In particular, it is impossible to widen the size of the resistor pattern 60, which is curved at the size of the limited volume substrate 70, and it is impossible to improve the breakdown voltage characteristics between the resistor patterns.

In addition, the volume substrate 70 on which the resistor pattern 60 is printed as described above is used to fill and harden the soft epoxy resin 21, which is an insulating resin, in the focus pack 10 to ensure insulation. Due to the complicated structure, there are many problems such as extremely low assemblability and productivity.

SUMMARY OF THE INVENTION The present invention has been made to solve various problems of the related art as described above, and its object is to increase the breakdown voltage between resistor patterns while constructing a volume board in a small size, and focusing on the volume board. It is installed inside the case of the pack, so that it can be spaced apart from the FBT case in which the bobbin is installed inside. Accordingly, the insulation of the volume board can be effectively secured without the need for filling and curing of the insulating resin inside the focus pack. To provide a focus pack of the FBT that can be made easy and easy to manufacture the focus pack, to enable the use of small and large volume boards by using the volume board to achieve standardization of the volume board. have.

1 is a front sectional structural view of a focus pack installed to one side of a general FBT case.

2 is a schematic structural diagram of a volume substrate installed inside a focus pack of a conventional FBT.

3 is a schematic perspective view showing a volume substrate installed in the FBT focus pack according to an embodiment of the present invention.

4 is a side cross-sectional structural view of a focus pack in which a volume substrate according to the present invention is installed.

5 is a structural diagram of a volume substrate installed in the focus pack according to another embodiment of the present invention.

6 is a rear structure diagram of the focus pack case in which the volume substrate of the present invention is mounted on the rear surface.

Explanation of symbols on the main parts of the drawings

110 ... Focus Pack 120 ... Volume Board

130,130 '... Focus and resistor pattern

130 "... pattern connection 130a ... input

130b ... output 140 ... opening

150,150 '... closed 160 ... case

170.Bulk 180

200 ... operation knob 210 ... slider

220.Volume shaft P ... inclined part

As a technical configuration for achieving the above object, the present invention provides a volume substrate provided inside the FBT focus pack,

A focus and screen resistor pattern formed by bending upward of the volume substrate;

An opening formed in a curved portion of the focus and screen resistor pattern in which the variable contact can rotate based on the center contact of the volume slider;

An arc-shaped closed part formed on one side of a pattern connection part connecting the focus and the screen resistor pattern of the volume substrate;

Protruding to the back of the case of the focus pack, by providing a focus pack of the FBT characterized in that it comprises an arc-shaped partition wall inserted into the arc-shaped closed portion of the volume substrate.

In addition, the present invention, the opening formed in the curved portion of the focus and the screen resistor pattern of the volume substrate includes a central portion of the virtual circle connecting the curved portion of the focus and the screen resistor pattern, the focus and the screen resistor of the volume substrate The opening formed in the curved portion of the pattern may provide a focus pack of the FBT, including a portion of a virtual straight line connecting the curved starting and ending points of the curved portion of the screen resistor pattern to open the volume substrate. By

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

Figure 3 is a schematic perspective view showing a volume substrate installed inside the FBT focus pack according to an embodiment of the present invention, Figure 4 is a side cross-sectional structural view of a focus pack case in which the volume substrate according to the present invention is installed, Focus and screen resistor patterns 130 and 130 ′ in which at least one curved portion is formed above the volume substrate 120 installed in the focus pack 110 of the FBT are formed, respectively, and the focus and screen resistor patterns 130 ( 130 ') includes a center of the focus and screen resistor patterns 130 and 130' that intersect the volume substrate 120, and the input end of the focus and screen resistor patterns 130 and 130 '. The opening 140 is formed by partially including a virtual straight line connecting the 130a and the output terminal 130b.

In addition, an arc-shaped closed part 150 is formed at one side of the pattern connection part 130 ″ connecting the focus and screen resistor patterns 130 and 130 ′ that are curved upward of the volume substrate 120 to form a case 160. Arc-shaped partition wall 170 protruding to the back of the) is inserted into the arc-shaped closed portion 150 of the volume substrate 120 to protrude.

In addition, the locking protrusion 180 protrudes on both sides of the inner surface of the case 160 of the focus pack 110, such that the volume substrate 120 mounted on the inner side of the rear surface of the case 160 is caught by the locking protrusion 180. It consists of a fixed configuration.

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

As shown in FIGS. 3 and 6, the volume substrate 120 installed inside the FBT focus pack 110 includes a focus and screen resistor pattern 130 and 130 ′ having a curved portion S formed thereon. ) Is formed by printing, wherein the focus and screen resistor patterns 130 and 130 ′ formed on the volume substrate 120 are formed with openings to prevent deterioration of the breakdown voltage characteristics due to the potential difference between the patterns. 140).

The opening 140 formed in the volume substrate 120 has a volume shaft central axis of each of the resistor patterns 130 and 130 ′ intersecting with the volume substrate 120, as shown in FIGS. 3 and 4. Connecting the input terminal 130a and the output terminal 130b of the curved focus and screen resistor patterns 130 and 130 'with the centers of the focus and screen resistor patterns 130 and 130', respectively. A portion of the virtual straight line is included to form an opening 140 that is cut off.

At this time, by forming an arc-shaped closed part 150 on one side of the pattern connecting portion 130 "connecting the focus and screen resistor patterns 130, 130 'that are curved upward on the volume substrate 120, Focus and openings are formed on the inside of the focus and screen resistor patterns 130 and 130 ′ formed on the volume substrate 120 and the opening 140 and the arc-shaped closed part 150 formed on the pattern connecting portion 130 ″ connecting the screen resistors 130 and 130 ′. The insulation between the screen resistor patterns 130 and 130 ′ may be secured.

Subsequently, an arc-shaped closed portion 150 of the volume substrate 120 is coupled to an inner surface of the case 160 of the focus pack 110 after the arc-shaped partition wall 170 protrudes and is installed on the rear surface of the case 160. Is inserted into the arc-shaped partition wall 170, it is possible to more fully ensure the insulation between the focus and the screen resistor pattern (130, 130 ').

On the other hand, the opening 140 is formed inside the focus and screen resistor patterns 130 and 130 ′, and is formed inside the pattern connection portion 130 ″ of the focus and screen resistor patterns 130 and 130 ′. The arc-shaped closed part 150 also forms the closed part 150 'on the opposite side facing the pattern connection part 130 "as shown in FIG. 5, and then forms the arc-shaped partition wall 170 on the back of the case 160. It is also possible to protrude so that the closing part 150 'can be inserted.

On the other hand, an arc-shaped partition wall 170 protruding from the case 160 of the focus pack 110 on which the volume substrate 120 is mounted may be inserted into the arc-shaped closed part 150 formed on the volume substrate 120. By protruding higher than the thickness of the volume substrate 120, it is possible to block the arc leakage of the high voltage generated in the focus and screen resistor patterns 130, 130 'through the partition wall 170.

Accordingly, by a simple operation of manually turning the operating knob 200 installed on the outside of the focus pack 110, the slider 210 spoke with the operating knob 200 on the basis of the focus and the screen output terminal serving as a reference contact point. ) Changes the voltage while the contact point rotates along the curved focus and screen resistor patterns 130 and 130 ′ of the volume substrate 120.

Accordingly, an input voltage is applied through the focus and screen input terminals 130a of the focus and screen resistor patterns 130 and 130 'to perform volume adjustment, and the input voltage is along the resistor to focus and screen adjustment output voltage. In this case, an arc-shaped closed part 150 is formed between the input terminal 130a and the output terminal 130b, respectively, which is formed inside the opening 140 and the pattern connection part 130 "connecting the focus and screen resistor patterns. As a result, a volume shaft 220 is inserted into the opening 140, and an arc-shaped partition wall 170 of the case 160 is inserted into the closing portion 150, respectively, so that the focus and screen resistor patterns 130, 130 ′ may be formed. The proximal portion is isolated by the partition wall 170, and thus an insulating distance is formed between the focus and the screen resistor patterns 130 and 130 ′.

Subsequently, when the volume substrate 120 as described above is coupled to the case 160 of the focus pack 110, the obstructions P are formed on both sides of the inner surface of the case 160 of the focus pack 110. When the volume 180 is inserted into the rear surface of the case 160 by installing the protrusion 180 to protrude, the volume substrate 120 is guided to the inclined portion P, and then the locking protrusion 180 is provided. It does not fall into the hook and is fixed.

Therefore, the volume substrate 120 inside the case 160 coupled as described above is spaced apart from the FBT case in which the bobbin is installed therein. Accordingly, the filling and filling of a separate insulating resin in the focus pack 110 is performed. It is possible to effectively ensure the insulation of the volume substrate 120 without the need for curing.

As described above, according to the FBT focus pack according to the present invention, when manufacturing the FBT focus pack, the breakdown voltage between the resistor patterns is increased while the volume board is formed in a small size, and the volume board is installed inside the case of the focus pack. It is to be spaced apart from the FBT case in which the bobbin is installed, and thus it is possible to effectively secure the insulation of the volume substrate without the need for filling and curing of the insulating resin inside the focus pack, the production and By simplifying the bonding process, the focus pack can be easily and easily manufactured, and the volume board can be used to make small and large volume boards, thereby achieving standardization of the volume board. .

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the following claims. Those of ordinary skill will want to know easily.

Claims (10)

In the focus pack of the FBT, A volume substrate 120 installed inside the FBT focus pack 110; A focus and screen resistor pattern (130, 130 ') formed by bending upward of the volume substrate (120); An opening 140 formed in a curved portion of the focus and screen resistor pattern 130 capable of rotating the variable contact with respect to the center contact of the volume slider 220, An arc-shaped closed part 150 formed at one side of a pattern connection part 130 ″ connecting the focus and screen resistor patterns 130 and 130 ′ that are curved upward of the volume substrate 120; Focus pack of the FBT, characterized in that it comprises an arc-shaped partition wall 170 which protrudes to the rear surface of the case 160 of the focus pack 110, and is inserted into the arc-shaped closed portion 150 of the volume substrate 120. . According to claim 1, wherein the opening 140 is formed in the curved portion of the focus and the screen resistor pattern 130 of the volume substrate 120, the virtual circle connecting the curved portion of the focus and the screen resistor pattern 130 Focus pack of the FBT comprising a central portion (P). The opening 140 formed in the curved portion of the focus and the screen resistor pattern 130 of the volume substrate 120 has a starting point 130a of the curved portion of the curved focus and the screen resistor pattern 130. Focus pack of the FBT, characterized in that for opening the volume substrate 120 by including a portion of the virtual straight line connecting the end point (130b), respectively. According to claim 1, wherein the engaging projection 180 is protruding on both sides of the inner surface of the case 160 of the focus pack 110, the volume substrate 120 is installed on the inside of the back of the case 160 is the locking projection ( Focus pack of the FBT characterized in that it is fixed to the (180). [5] The FBT of claim 4, wherein the locking protrusion 180 protruding to both sides of the inner surface of the case 160 has an inclined portion P formed thereon for smooth insertion of the volume substrate 120. Focus pack. The arc-shaped closed part 150 formed on one side of the pattern connection part 130 "connecting the focus and the screen resistor patterns 130 and 130 'of the volume substrate 120 is opposite to this. Focus pack of the FBT, characterized in that the closing portion (150 ') having the same shape as the arc-shaped closing portion (150') is formed on the opposite volume substrate (120). According to claim 1 or 6, wherein the arc-shaped partition wall 170 is inserted into the arc-shaped closed portion 150, 150 'of the volume substrate 120, protruding higher than the thickness of the volume substrate 120. Focus pack of FBT characterized by. The focus pack of the FBT according to claim 1 or 6, wherein the arc-shaped closed part (150) (150 ') of the volume substrate (120) is formed in a predetermined shape. The focus and screen resistor patterns 130 and 130 of claim 1 or 6, wherein the arc-shaped closed portions 150 and 150 of the volume substrate 120 are formed in a curved shape on the volume substrate 120. Focus pack of FBT, characterized in that closed close to the curved portion of '). According to claim 1, One end of the volume shaft 230 in the central portion (P) of the virtual circle connecting the curved portions of the focus and screen resistor patterns 130, 130 'formed on the volume substrate 120, respectively. A focus pack of the FBT, which is supported by a shovel.