KR100355923B1 - Fly back transformer case - Google Patents

Abstract

The present invention allows to reduce the size of the FBT case in which the high pressure and low pressure bobbin is interpolated, and easy to combine the high pressure bobbin installed inside the FBT case, the FBT case that can reduce the amount of insulating resin filled for insulation In particular, the grooves 160 are formed in a plurality of longitudinal directions so that the coil engaging jaw 150 formed at the periphery of the high-pressure bobbin 120 is interposed in the periphery of the FBT case 130, the grooves At the periphery of the 160, a bobbin insertion portion 180 formed of an arc connecting the groove portion 160 to be inserted into the cylindrical high-pressure bobbin body portion 170 is formed to provide a bobbin coupling portion 190. It is the point to do it.

Description

Case of flyback transformer {FLY BACK TRANSFORMER CASE}

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 TV or a monitor, so as to reduce the size of the FBT case in which the high and low pressure bobbins are interpolated, and FBT The present invention relates to an FBT case which is easy to combine the high pressure bobbin installed inside the case and to reduce the amount of insulating resin filled for insulation. In particular, the coil catching jaws of both sides of the high pressure bobbin are interpolated by the periphery of the FBT case. The groove is formed long, the bobbin insert is installed in the peripheral portion of the cylindrical high-pressure bobbin body is inserted, the high-pressure bobbin combined with the low-pressure bobbin because the main body portion of the high-pressure bobbin is inserted into the bobbin insert portion closely The bobbin insert portion and the groove portion so that the main body portion of the high pressure bobbin is closely inserted into the FBT case installed therein. It is possible to reduce the size of the FBT case, thereby reducing the amount of insulating resin filled for insulation inside the FBT case, as well as easy and easy coupling of the high-pressure bobbin installed inside the FBT case. It is about the FBT case that can be made.

In a generally known FBT, a low pressure coil couples a low pressure bobbin wound with a coil to a high pressure bobbin wound with a high pressure coil to generate a high voltage by a potential difference between the coils. The bobbin is installed inside a cylindrical FBT case, and then filled and cured with insulating resin to insulate the inside of the FBT case.

In the conventional FBT case structure related to the above technique, as shown in FIG. 1, the high pressure bobbin 20 coupled with the low pressure bobbin 10 is inserted into the internal space S of the FBT case 30. The inside of the FBT case 30 is made of a filling to harden the insulating resin 40 for insulation to complete the FBT.

As shown in FIG. 2, the conventional FBT having the above configuration interpolates the high-pressure bobbin 20 to which the low-pressure bobbin 10 is coupled to the internal space S formed in the rectangular FBT case 30. In one state, in order to insulate the high pressure and low pressure bobbin 20, 10, the FBT is manufactured by filling and curing an epoxy resin, which is an insulating resin, inside the FBT case 30.

However, when the high pressure bobbin 20 is inserted into the FBT case 30 as described above, the flow of the high pressure bobbin 20 inserted into the internal space S of the FBT case 30 easily occurs, causing assembly failure. Of course, in particular, the epoxy resin filled for insulation into the space S of the FBT case 30 is filled up to a space other than the high-pressure bobbin, resulting in expensive insulation resin waste. It was.

The present invention has been made in order to improve the various problems of the prior art as described above, the object of the bobbin insertion portion so that the main body portion of the high-pressure bobbin is inserted into the FBT case in which the high-pressure bobbin coupled with the low-pressure bobbin is installed inside And recesses to reduce the size of the FBT case, thereby reducing the amount of insulating resin filled for insulation inside the FBT case, as well as the combination of the high-pressure bobbin installed inside the FBT case. The present invention provides an FBT case that can be easily and easily made and prevents the assembly of the high-pressure bobbin coupled to the inside of the FBT case to prevent assembly defects.

1 is a schematic exploded perspective view of a general FBT case and a high-pressure bobbin inserted thereto.

Figure 2 is a schematic cross-sectional structural view of the high pressure bobbin coupled to the inside of the conventional FBT case.

Figure 3 is a schematic exploded perspective view of the FBT case and the high-pressure bobbin inserted therein according to the present invention.

Figure 4 is a schematic cross-sectional structural view of the high pressure bobbin coupled to the inside of the FBT case of the present invention.

<Description of the symbols for the main parts of the drawings>

110 ... low pressure bobbin 120 ... high pressure bobbin

130 ... FBT case 140 ... insulated resin

150 ... coil jam step 160 ... recess groove

170. Bobbin body 180. Bobbin insert

190. Bobbin coupling

As a technical configuration for achieving the above object, the present invention is a high-pressure bobbin combined with a low-pressure bobbin is inserted into the internal space of the FBT case, the inside of the FBT case is filled with an insulating resin for insulation in the case of FBT ,

Grooves formed in a plurality of longitudinal directions such that the coil catching jaw formed at the periphery of the high-pressure bobbin is inserted into the periphery of the FBT case;

At the periphery of the groove portion bobbin insertion portion consisting of an arc (弧) for connecting the groove portion so that the cylindrical high-pressure bobbin body portion is inserted;

The groove of the high pressure bobbin and the high pressure bobbin main body portion is provided with a groove portion and the bobbin insertion portion to be inserted closely, to provide a case of the FBT characterized in that it comprises a bobbin coupling portion is provided to be filled and cured insulated resin therein. By

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

Figure 3 is a schematic exploded perspective view of the FBT case and the high-pressure bobbin inserted into it according to the present invention, Figure 4 is a cross-sectional structural view of the high-pressure bobbin coupled to the interior of the FBT case of the present invention, the low-pressure bobbin 110 is coupled The internal space is formed in the FBT case 130 in which the high-pressure bobbin 120 is interpolated, and the insulation resin 140 for insulation is filled and cured in the FBT case 130.

In addition, a plurality of grooves 160 are formed in the longitudinal direction of the FBT case 130 so that the coil catching jaw 150 formed at the periphery of the high-pressure bobbin 120 is inserted in the longitudinal direction, and the grooves 160 are formed. In the peripheral portion of the cylindrical high-pressure bobbin main body 170 is inserted into the bobbin insertion portion 180 consisting of an arc (弧) for connecting the groove portion 160 is inserted into the configuration to provide a bobbin coupling portion 190 Is done.

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

As shown in Figures 3 and 4, the low-pressure bobbin winding winding the low-pressure coil 110 is interpolated and fixed to the high-voltage bobbin 120 winding the high-pressure coil to generate a high voltage due to the potential difference, wherein the high-pressure bobbin ( The internal space S of the FBT case 130 in which the 120 is inserted is hardened after the epoxy resin, which is the insulating resin 140, is filled to insulate the high and low pressure bobbins, thereby manufacturing the FBT.

At this time, the groove portion 160 is formed long in the longitudinal direction of the FBT case 130 so that the coil engaging jaw 150 formed on the periphery of the high-pressure bobbin 120 can be closely interpolated. At the periphery of the groove portion 160 is formed a bobbin insertion portion 180 made of an arc connecting the groove portion 160 to be inserted into the cylindrical high-pressure bobbin body portion 170, the high-pressure bobbin 120 There is a minimum space for insertion.

Therefore, when the high-pressure bobbin 120 is inserted into the space portion of the FBT case 130, the cylindrical bobbin body portion 170 is inserted into the bobbin insertion portion 180 while the coil of the bobbin body portion 170 is caught by the coil. When the jaw 150 is tightly inserted into the recess 160, when filling the insulating resin 140 for insulation into the bobbin coupling portion 190, only the space where the high-pressure bobbin 120 is inserted is insulated. The resin is filled to minimize the waste of the insulating resin.

According to the case of the FBT according to the present invention, the bobbin insert portion and the groove portion to provide the FBT case in which the high-pressure bobbin coupled with the low-pressure bobbin is installed inside the main body portion of the high-pressure bobbin closely, It is possible to reduce the size, thereby reducing the amount of insulating resin filled for insulation inside the FBT case, as well as easy and easy combination of the high-pressure bobbin installed inside the FBT case, By preventing the flow of high-pressure bobbin coupled to the inside of the FBT case has an excellent effect that can prevent the assembly failure in advance.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be clear to those skilled in the art that they can easily know.

Claims (2)

The high pressure bobbin 120 coupled with the low pressure bobbin 110 is inserted into the internal space of the FBT case 130, and the inside of the FBT case 130 is filled in the case of the FBT filled with the insulating resin 140 for insulation. In Grooves 160 formed in a plurality of longitudinal directions such that the coil catching jaw 150 formed at the periphery of the high-pressure bobbin 120 is interposed with the periphery of the FBT case 130; A case of the FBT, characterized in that it comprises a bobbin insertion portion (180) made of an arc connecting the groove portion 160 so that the cylindrical bobbin body portion (170) is inserted in the peripheral portion of the groove portion (160). The FBT case 130 of claim 1, wherein the recess 160 and the bobbin insertion unit 180 are installed to closely insert the coil engaging jaw 150 and the bobbin main body 170 of the high pressure bobbin 120. ), The case of the FBT, characterized in that the bobbin coupling portion 190 is provided so that the insulating resin 140 is filled and cured therein.