KR19990009993A - Bondless coupling structure of focus pack - Google Patents

Abstract

It is possible to prevent the epoxy filled inside the case from leaking to the outside without using an adhesive, and the first protrusion protruded to a predetermined height along one side of the case, and the first protrusion spaced at a predetermined distance from the first protrusion and disposed parallel to the first protrusion. 2 projections, the coupling grooves having a predetermined depth formed between the first projections and the second projections and protrude downward along one side of the focus pack and are formed shallower than the depth of the coupling grooves to form a predetermined space between the bottom of the coupling grooves. The present invention relates to a bondless coupling structure of a focus pack having a configuration including a second protrusion.

Description

Bondless coupling structure of focus pack

The present invention relates to a bondless coupling structure of a focus pack, and more particularly, to a bondless coupling structure of a focus pack for fixing a focus pack to a case of a flyback transformer which is a high pressure generator.

In general, the flyback transformer, which is a high pressure generator, has a case for accommodating and protecting a high pressure bobbin and a low pressure bobbin coupled to each other. The focus pack is fixed to one side of the case, and the coupling structure thereof will be described with reference to FIG. 1.

1 is a view showing a bondless coupling structure of a conventional focus pack. 1 shows a case 10 of a flyback transformer. The case 10 is for accommodating and protecting the high pressure bobbin and the low pressure bobbin coupled to each other, and has an internal space 12 of a predetermined size. The focus pack 20 is coupled to one side of the case 10.

As shown, one side of the case 10 is provided with a first protrusion 14. The first protrusion 14 is formed long along one side of the case 10. The 2nd protrusion 16 is provided in the outer side of this 1st protrusion 14, This 2nd protrusion 16 is arrange | positioned in parallel with the 1st protrusion 14. As shown in FIG. A coupling groove 18 having a predetermined depth is formed between the first protrusion 14 and the second protrusion 16. The first protrusion 14, the second protrusion 16 and the coupling groove 18 should be formed as shown on both sides of the case 10, respectively.

As shown in FIG. 1, the focus pack 20 is coupled to the case 10. As shown in the bottom of both sides of the focus pack 20, the third projection 22 of a predetermined depth is formed to protrude downward. The third protrusion 22 is inserted into the coupling groove 18 formed in the case 10. As can be seen in Figure 1, the lower end of the third projection 22 is in close contact with the bottom of the coupling groove (18).

That is, in the related art, a high pressure bobbin and a low pressure bobbin are inserted into the inner space 12 of the case 10, and as shown in FIG. 1, the insulation pack is fixed for insulation in a state where the focus pack 20 is fixed to the case 10. The interior space 12 was filled with epoxy.

In this case, the epoxy is filled in the inner space 12 of the case 10 in a high temperature liquid state, and a large amount of epoxy is formed through the gap between the first protrusion 14, the second protrusion 16, and the third protrusion 22. There was a problem of leaking. This is because the epoxy leaks into the minute gap between the first protrusion 14, the second protrusion 16, and the third protrusion 18 due to capillary phenomenon due to the temperature and pressure rise inside the case 10 during the epoxy filling. . In order to prevent this phenomenon, an adhesive may be used, but an expensive adhesive that is not only cumbersome but sufficiently resistant to high temperatures should be used.

It is an object of the present invention to provide a bondless coupling structure of a focus pack that prevents the epoxy filled in the case from leaking to the outside without using an adhesive.

1 is a view showing a bondless coupling structure of a conventional focus pack,

2 is a view showing a bondless coupling structure of a focus pack according to the present invention.

Explanation of symbols for the main parts of the drawings

110: case 112: internal space

114: first projection 116: second projection

118: coupling groove 120: focus pack

122: third projection 124: space

An object of the present invention is a bondless coupling structure of a focus pack fixed to a flyback transformer case for receiving and protecting the high-pressure bobbin and low-pressure bobbin inside, the first projection protruding to a predetermined height along one side of the case, A second projection disposed parallel to the first projection spaced apart from the first projection by a predetermined distance, a coupling groove having a predetermined depth formed between the first projection and the second projection, and protrudes downward along one side of the focus pack and is shallower than the depth of the coupling groove; It can be achieved by the bondless coupling structure of the focus pack, characterized in that it comprises a second projection formed to form a predetermined space between the bottom of the coupling groove.

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

2 is a view showing a bondless coupling structure of a focus pack according to the present invention. 2 shows a case 110 of a flyback transformer. The case 110 is for accommodating and protecting the high pressure bobbin and the low pressure bobbin coupled to each other, and has an internal space 112 of a predetermined size. The focus pack 120 is coupled to one side of the case 110.

As shown in FIG. 2, a first protrusion 114 is provided at one side of the case 110. The first protrusion 114 is formed long along one side of the case 110. A second protrusion 116 is provided outside the first protrusion 114, and the second protrusion 116 is disposed in parallel with the first protrusion 114. A coupling groove 118 having a predetermined depth is formed between the first protrusion 114 and the second protrusion 116. The first protrusion 114, the second protrusion 116 and the coupling groove 118 should be formed as shown on both sides of the case 110, respectively.

As can be seen in FIG. 2, the focus pack 120 is coupled to the case 110. As shown in the bottom of both sides of the focus pack 12, the third protrusion 122 of a predetermined depth is formed to protrude downward. The third protrusion 122 is inserted into the coupling groove 118 formed in the case 110. The third protrusion 122 protrudes downwards much shallower than the conventional one. In the state where the third protrusion 122 is inserted into the coupling groove 118, the lower end thereof is maintained in a predetermined height without being in close contact with the bottom of the coupling groove 118. Accordingly, a space 124 having a predetermined size is formed in the lower portion of the coupling groove 118. The space 124 is to prevent the epoxy filled in the case 110 from leaking outward by capillary action.

That is, the high pressure bobbin and the low pressure bobbin are inserted into the internal space 112 of the case 110, and as shown in FIG. 1, the internal space for insulation in the state in which the focus pack 120 is fixed to the case 110. Fill the epoxy with 112.

In this case, the epoxy is filled in the internal space 112 of the case 110 in a high temperature liquid state. When the temperature and the pressure are increased, the epoxy is formed through the gap between the first protrusion 114 and the third protrusion 122. Capillary phenomenon flows out to the space 124 formed between the protrusion 122 and the bottom of the coupling groove 118. Accordingly, the space 124 is gradually filled with epoxy. In this space 124, the temperature and pressure of the epoxy drops sharply, and the gap between the second protrusion 116 and the third protrusion 122 does not cause a capillary phenomenon. As a result, the epoxy stays in the space 124 and no longer causes outward epoxy leakage. Therefore, in the bondless coupling structure of the focus pack according to the present invention, the leakage of the epoxy is prevented even when a separate adhesive is not used.

As can be seen from the above description, in the case of using the bondless coupling structure of the focus pack according to the present invention, there is a space having a predetermined size to reduce the temperature and pressure of the epoxy between the first protrusion, the second protrusion, and the third protrusion. It is blocked in the middle. As a result, the epoxy does not leak out of the case and there is no need to use a separate adhesive.

Claims (1)

In the bondless type coupling structure of the focus pack fixed to the flyback transformer case that accommodates and protects the high pressure bobbin and the low pressure bobbin therein, A first protrusion protruding at a predetermined height along one side of the case; A second projection spaced apart from the first projection by a predetermined distance and arranged in parallel with the first projection; A coupling groove having a predetermined depth formed between the first protrusion and the second protrusion; And Bonds of the focus pack, characterized in that it comprises a second projection protruding downward along one side of the focus pack and shallower than the depth of the coupling groove to form a predetermined space between the bottom of the coupling groove Type coupling structure.