KR200154300Y1 - A core fixing structure of flyback transformer - Google Patents

Abstract

None.

Description

A CORE FIXING STRUTURE OF FLYBACK TRANSFORMR

The present invention relates to a core fixing structure of a high-pressure generator, and more particularly, a plurality of elastic pieces are provided on both sides of the core guide part so that the core is tightly supported and fixed to the inner circumference of the insertion hole. It relates to a core fixing structure of a high pressure generator that allows the core to be more closely fixed.

In general, the flyback transformer 100 refers to a single winding transformer for obtaining a high pressure for a water pipe using a pulse generated during a return period of a horizontal deflection output in a television receiver, as shown in FIG. 110 and a housing 130 for accommodating the high-pressure bobbin 120 therein, the focus pack (Focus Pack) 140 is coupled to the outer peripheral surface.

In this case, the focus pack 140 is connected to a high voltage terminal (not shown) provided in the housing 130 to obtain a predetermined focus voltage obtained by adjusting the focus knob 141 and the screen knob 142. The screen voltage is exchanged with the cathode ray tube.

In addition, the insertion hole 111 drilled in the center of the low-pressure bobbin 110 is fitted with two sets of cores 150a, 150b formed in the shape of the letter U (U), the insertion hole ( 111 has a diameter slightly larger than that of the cores 150a and 150b so that the cores 150a and 150b can be fitted smoothly.

In addition, a pair of cores 150a and 150b fitted into the insertion hole 111 of the low pressure bobbin 110 are manufactured of a magnetic material to minimize power loss due to magnetization that may be generated during operation of the high pressure generator 100. Insertion of the bottom portion of the low pressure bobbin 110 to support the side surface of the core 150a fitted in the insertion hole 111 of the low pressure bobbin 110 so as not to be separated by drop test or general impact of the television receiver. The ball 111 is formed with a core guide 112 open to one side as shown in FIGS. 2 and 3.

Here, the pair of cores 150a and 150b supported by the core guide 112 and fitted into the insertion hole 111 of the low pressure bobbin 110 may be completely fixed through bonding with an adhesive.

By the way, the core fixing structure of the high-pressure generator according to the prior art made of the structure as described above, the core 150a, 150b can be smoothly fitted into the insertion hole 111 bored in the center of the low-pressure bobbin 110. Since the diameter of the inner circumference of the insertion hole 111 is slightly larger than the diameter of the outer circumference of the cores 150a and 150b, the assemblability of the cores 150a and 150b may be improved, but the core The positions of 150a and 150b are changed fluidly so as to be deflected in one and up and down directions when fixing the bonding through the adhesive, which adversely affects the characteristics and reliability of the high pressure generator 100.

That is, cores 150a and 150b interlocked with the high pressure coil of the high pressure bobbin 120 and the low pressure coil of the low pressure bobbin 110 to generate a high pressure by magnetization are formed on the inner circumference of the insertion hole 111 through the adhesive. The position change is easily generated by external impact or contact before the bonding is fixed, which affects the generation of high pressure, which greatly reduces the reliability of the product.

Therefore, the present invention has been devised to solve the above problems, and its purpose is to provide a plurality of elastic pieces on both sides of the core guide portion of the low pressure bobbin to support the core more closely and precisely in the insertion hole. In the present invention, there is provided a core fixing structure of a high-pressure generator that can be fixed by bonding.

1 is an exploded perspective view showing a general high pressure generator.

Figure 2 is an exploded perspective view of the low pressure bobbin and the core tilted in the high pressure bobbin viewed from the bottom to explain the core fixing structure of the high pressure generator according to the prior art.

3 is a bottom view showing a low pressure bobbin fitted to a high pressure bobbin to explain the core fixing structure of the high pressure generator according to the prior art.

Figure 4 is an exploded perspective view of the low pressure bobbin and the core inserted into the high pressure bobbin viewed from the bottom to explain the core fixing structure of the high pressure generator according to the present invention.

Figure 5 is a bottom view showing a low pressure bobbin tilted to a high pressure bobbin to explain the core fixing structure of the high pressure generator according to the present invention.

* Explanation of symbols for main parts of the drawings

100: high pressure generator 110: low pressure bobbin

111: insertion hole 112: core guide portion

112a: elastic piece 120: high pressure bobbin

130 housing 140 focus pack

141: focus knob 142: screen knob

150a, 150b: core 160: diode

The present invention for achieving the above object is, the insertion hole for receiving two sets of cores made of a magnetic body formed in the shape of the letter U (U), and the two sets of cores in the direction facing each other in the center. In the core fixing structure of the high-pressure generator comprising a low-pressure bobbin having a core guide portion formed on the bottom surface to support the side of the core inserted into the insertion hole in the lower portion, in the inner circumference of the insertion hole The basic configuration of the technical configuration that includes a plurality of elastic pieces that are bent in the center direction facing each other from the edges of the both sides of the core guide portion so that the core is tightly supported and fixed to elastically push the core in the outward direction It features.

Hereinafter, a preferred embodiment of the core fixing structure of the high-pressure generator according to the present invention with reference to FIGS. 4 and 5 as follows.

4 is an exploded perspective view of a low pressure bobbin and a core inserted into the high pressure bobbin from the bottom to explain the core fixing structure of the high pressure generator according to the present invention, and FIG. 5 is a view illustrating the core fixing structure of the high pressure generator according to the present invention. It is a bottom view which shows the low pressure bobbin inserted in the high pressure bobbin, and the same name and the same code | symbol are used about the same structure which performs the same operation as the conventional structure.

Core fixing structure of the high-pressure generator according to the present invention is formed in the letter U (U) shape in the insertion hole 111 bored in the center of the low-pressure bobbin 110 as shown in FIGS. One set of cores 150a and 150b is fitted and the insertion hole 111 is larger than the diameter of the cores 150a and 150b so that the cores 150a and 150b can be fitted smoothly. Have a slightly larger diameter.

Then, the bottom portion of the low pressure bobbin 110 is inserted to support the side surface of the core 150a fitted in the insertion hole 111 of the low pressure bobbin 110 so as not to be separated by a drop test or a general shock of a television receiver. The ball 110 is formed with a core guide 112 opened to one side.

At this time, the low-pressure bobbin 110 fitted to the high-pressure bobbin 120 is the edge of the both sides of the core guide 112 so that the core 150a is tightly supported and fixed to the inner peripheral side of the insertion hole 111. It is provided with a plurality of elastic pieces (112a) that are bent in the center direction facing each other from the elastically push the core 150a in the outward direction.

Referring to the fixing operation and action of the core (150a, 150b) of the high-pressure generator 100 according to the present invention made of the above configuration.

First, a plurality of diodes 160 are fixed and a high pressure bobbin in which a high pressure coil is wound a plurality of times. A low pressure bobbin 110 in which a low pressure coil is wound a plurality of times is inserted into the high pressure bobbin. 120 is mounted inside the housing 130.

Thereafter, two sets of cores 150a and 150b which minimize power loss due to magnetization that may be generated during operation of the high pressure generator 100 are mutually inserted into the insertion holes 111 of the low pressure bobbin 110. Push in the opposite direction.

In this case, since the diameters of the cores 150a and 150b are smaller than the diameter of the inner circumference of the low pressure bobbin 110, the cores 150a and 150b may naturally fit into the insertion holes 111 of the low pressure bobbin 110.

On the other hand, the core guide portion 112 formed on the bottom portion of the low pressure bobbin 110 supports the core 150a fitted in the upper direction from the lower side of the low pressure bobbin 110, the core 150a is It is pushed outward by a plurality of elastic pieces 112a extending in a direction facing each other on both sides of the core guide 112, the core 150a by the elastic force is the lower portion of the insertion hole 111 It can be fixed in close contact with the.

In this way, the assembly can be completed by bonding and fixing the other core 150b to the core 150a based on the core 150a that is elastically fixed at the lower portion of the low pressure bobbin 110. .

Here, the plurality of elastic pieces (112a) performs a function of closely fixing the core (150a) that is fitted in the lower insertion hole 111 of the low-pressure bobbin 110 to the core (150a) in the high-pressure generator (100) When (150b) is combined, it is possible to implement the position fixing in a precisely aligned state, even if the external impact and contact occurs, it is possible to closely fix the core (150a, 150b) in a state that minimizes the impact It can be seen that.

As described above, according to the core fixing structure of the high-pressure generator according to the present invention, the plurality of elastic pieces on both sides of the core guide portion 112 so that the core 150a is tightly supported and fixed to the inner circumference of the insertion hole 111. The assembly and reliability of the high-pressure generator 100 are provided by providing the 112a to bond the cores 150a and 150b to the insertion hole 111 of the low pressure bobbin 110 more closely and precisely. There is an excellent effect that can greatly improve the.

Claims (1)

Two sets of cores 150a and 150b made of a magnetic material and formed in the shape of an alphabet letter U and the two sets of cores 150a and 150b are fitted in a direction facing each other. The low-pressure bobbin 110 is formed with a core guide portion 112 is formed on one side surface to support the side surface of the core 150a inserted into the insertion hole 111 is formed in the insertion hole 111 In the core fixing structure of the high-pressure generator comprising a, facing each other from the edges of both sides of the core guide portion 112 so that the core 150a is tightly supported and fixed to the inner circumference of the insertion hole 111 The core fixing structure of the high-pressure generator, characterized in that it comprises a plurality of elastic pieces (112a) which are bent in the center direction to elastically push the core (150a) outward.