KR200249549Y1 - A FBT having one body style bobbin - Google Patents

Abstract

The present invention relates to a FBT (Fly Back Transformer), which is a high voltage generator, and in particular, a high-pressure bobbin and a low-pressure bobbin wound by a boosting coil are integrally formed to simplify the structure and reduce the defective rate. The present invention relates to a FB having an integral bobbin that can shorten the manufacturing process by reducing the number of steps.

Description

FBT having one body style bobbin}

The present invention relates to a FBT (Fly Back Transformer), which is a high voltage generator, and in particular, a high-pressure bobbin and a low-pressure bobbin wound by a boosting coil are integrally formed to simplify the structure and reduce the defective rate. The present invention relates to a FB having an integral bobbin that can shorten the manufacturing process by reducing the number of steps.

FBT, a high voltage generator, is used in many devices that apply high voltage to the anode for inducing electron beams emitted from electron guns of CRTs or other devices that require high voltages. FBT ') is a coil for boosting the bobbin having a terminal terminal connected to the coil, the ferrite core is inserted through the bobbin, and the output voltage boosted by the coil stabilizes the anode cap It includes a rectifying circuit for transmitting to, an anode cap connected to the rectifying circuit, and a case in which the bobbin, the ferrite core and the rectifying circuit are built.

The conventional structure of the FBT has a configuration in which the high pressure bobbin 20 and the low pressure bobbin 10 are molded and fastened to each other, as shown in FIG.

Usually, the bobbin is configured to draw a plurality of output voltages of different voltages by combining a plurality of bobbins with different winding times of each coil.

The conventional structure of such bobbins is shown in Fig. 1 (the left side is shown as the top and the right side as shown in Figs. 1 to 3 below). The flanges 13 and 13` are placed on the upper and lower portions of the drum 12. The low pressure bobbin 10 is formed, and the low pressure bobbin 10 is inserted into the center and coupled to the high pressure bobbin formed with a plurality of flanges 23 are spaced apart from each other by a predetermined interval around the drum.

The diameter of the flange 13 ′ of the lower portion of the low pressure bobbin is slightly smaller than the diameter of the low pressure bobbin insertion hole 21 formed in the center of the high pressure bobbin to facilitate insertion of the low pressure bobbin.

A core insertion hole 11 into which a ferrite core is inserted is formed in the center of the low pressure bobbin, and a plurality of protrusions 14 having terminal terminals installed on the upper flange 13 are formed outward (three directions). have. Each of the protrusions 14 is fixed to a terminal terminal formed of a vertical terminal terminal 16 and a horizontal terminal terminal 15 by bending in a b-shape.

The coil outer surface of the drum 13 between the upper flange 13 and the lower flange 13 ′ of the low pressure bobbin is wound around a plurality of coils having different winding times and connected to the plurality of terminal terminals, respectively.

An upper flange 22 and a lower flange 24 are formed at upper and lower portions of the high pressure bobbin 20 into which the low pressure bobbin is inserted, and the upper surface of the upper flange 22 is fastened with the low pressure bobbin 10. An input terminal fixing protrusion 28 into which the fastening piece 25 for fastening and the high voltage side input terminal 29 serving as a current input terminal of the coil wound on the high pressure bobbin is fitted.

One side edge of the lower flange 24 of the high-pressure bobbin is provided with a high-voltage output terminal 26 is applied to the rectifier circuit for rectifying the high-voltage current output from the high-pressure bobbin.

A plurality of flanges 23 are formed between the upper flange 22 and the lower flange 24 to constitute several stages. The plurality of flanges 23 are formed with radial carry over slots 27 extending to the outer surface of the drum.

The coil wound around the high pressure bobbin is connected to the high voltage side input terminal 29

It is wound on the outer circumferential surface of the bobbin drum. The coil wound from the top is rolled up when it meets the flange while winding and skips to the next stage, and continues to wind up to reach the high voltage output terminal 26 of the lower flange 24 and connected to the high voltage output terminal.

When the two bobbins as described above, the ferrite core is inserted into the core insertion hole 11 which is the central through hole of the combined low pressure bobbin. The ferrite core is composed of an upper ferrite core 31 and a lower ferrite core 32 to bind the upper ferrite core 31 and the lower ferrite core 32 to surround the upper, lower and one side of the bobbin.

A pedestal 33 is positioned at the lower portion of the bobbin to which the ferrite core is coupled, and the pedestal 33 is installed in the lower case 34, but a rectifier circuit is installed in the pedestal and the space below.

The upper case 1 incorporating the above components is combined with the lower case 34 to complete the overall configuration of the FBT. The lower case 34 has a hole through which the lead line of the anode cap drawn out through the rectifier circuit is formed to be connected to the anode cap (not shown).

As described above, the conventional FBT includes six independent parts of the upper case 1, the lower case 34, the low pressure bobbin 10, the high pressure bobbin 20, the ferrite core and the pedestal 33. do. Therefore, six separate molds are required, and as a result, the assembly process of each component also becomes complicated, resulting in a long manufacturing time and a rise in manufacturing cost.

In addition, in the case of the conventional bobbin as described above, after the coil is wound around the low pressure bobbin 10 and the coil is wound around the vertical and horizontal terminal terminals 16 and 15, the low pressure bobbin should be inserted into the low pressure bobbin insertion hole of the high pressure bobbin. There is a problem in that the failure rate is high due to the occurrence of disconnection of the coil in the fixing.

In addition, in the case of the high-pressure bobbin 20 of the conventional bobbin as described above, when the coil wound on the bobbin expands up and down, the coil is peeled off while the upper and lower coils are in contact with each other by the back slot 27 of the flange 23. The insulation of the liver is removed and shorted, which is a cause of failure.

In addition, the conventional terminal terminal has a b-type terminal composed of the vertical terminal terminal 16 and the horizontal terminal terminal 15 is formed in three directions. Among them, soldering is performed on the horizontal terminal 15. The horizontal terminal is installed in three directions in the horizontal direction. Therefore, one dipping should be performed once in each direction, so three dipping operations are required, which increases the manufacturing process.

The present invention has been made to solve the problems of the conventional FBT as described above, the object of the present invention is to provide a FBT that can reduce the number of parts to reduce the manufacturing cost and shorten the assembly process and manufacturing time.

Another object of the present invention is to form a unit capable of integrally forming a high pressure bobbin and a low pressure bobbin, and preventing a short circuit of a coil carrying over in a flange for forming a multi-level high pressure bobbin.

Another object of the present invention is to provide an FBT including a bobbin having means for preventing oxidation of a coil connected to the high voltage output terminal.

This object can be achieved by the configuration of the FBT according to the present invention having an integral bobbin formed integrally with the high pressure bobbin and the low pressure bobbin, will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a conventional fbit

2 is a full exploded perspective view of the present invention

Figure 3 is a detailed view of the integral bobbin according to the present invention

Figure 4 is a front view of the integral bobbin according to the present invention

5 is a right side view of the integrated bobbin according to the present invention

Figure 6 is a left side view of the integral bobbin according to the present invention

7A is a cross-sectional view taken along the line A-A of FIG.

FIG. 7B is a cross sectional view along line B-B in FIG. 4 (upper flange omitted)

FIG. 7C is a cross sectional view along line C-C in FIG. 4 (upper flange omitted)

FIG. 7D is a sectional view taken along the line D-D of FIG. 4 (upper flange omitted)

Figure 8 is a longitudinal cross-sectional view of the case of the present invention

9 is a longitudinal sectional view of the present invention

Figure 10 is a longitudinal cross-sectional view of the subject innovation

11 is an overall perspective view of the present invention

Figure 12 is a longitudinal cross-sectional view of the integral bobbin according to the present invention

According to the present invention, as shown in FIG. 2, a bobbin having a terminal terminal 53 connected to the coil by winding a coil (not shown) and a ferrite core 70 penetrated and inserted into the bobbin, It comprises a rectifying circuit for stabilizing the output voltage boosted by the coil to pass to the anode cap, an anode cap 90 connected to the rectifying circuit, and a case 71 in which the bobbin, ferrite core and the rectifier circuit are built-in. For FBT,

The bobbin is characterized in that the high-pressure bobbin and low-pressure bobbin consisting of an integral bobbin formed integrally.

In other words, the present invention has a configuration in which the bobbin is integrally formed and the pedestal and the lower case are removed to greatly reduce the number of parts. This is possible through the unique coupling structure of the integral bobbin and the integrated bobbin and the case of the present invention.

The structure of the integrated bobbin which is a feature of the present invention will be described in detail with reference to FIGS.

The integrated bobbin of the present invention has a plurality of flanges spaced apart from each other on the outer surface of the drum (see reference numeral 95 in FIG. 12), and between the flanges are composed of a low-pressure bobbin and a high-pressure bobbin of the difference. That is, a plurality of flanges are formed in the drum of one bobbin, and the flange is composed of a high pressure bobbin and a low pressure bobbin.

The high pressure bobbin is configured to be partitioned into a plurality of layers by a plurality of flanges to form a plurality of high pressure bobbins.

That is, the flange of the present invention is formed in plurality, preferably from the top to the bottom (for the convenience of the drawing machine, the upper flange 51, the first stage flange 55, the second stage flange 56, and three It is composed of a stage flange 57 and a lower flange 58, between the upper flange 51 and the first stage flange 55 is composed of a low-pressure bobbin, between the first stage flange 55 and the second stage flange 56 Is composed of a high pressure primary bobbin 60, between the two-stage flange 56 and the three-stage flange 57 is composed of a high-pressure secondary bobbin 61, the three-stage flange 57 and the lower flange ( 58) is composed of a high pressure tertiary bobbin (62).

The high-pressure bobbin can be configured as a third or more or less than the third type of bobbin type, if necessary, multi-order bobbin, and also does not depart from the scope of the present invention.

The upper flange 51 has a plurality of coil guide grooves 82 and a plurality of terminal fixing protrusions 52 are formed, and a plurality of terminal terminals 53 protrude vertically into the plurality of terminal fixing protrusions. And fixed to the lower flange, and the high-voltage output terminal support protrusion 64 is formed to protrude outward, and the high-voltage output terminal 63 is installed therein to block the growth of soldering lead around the fixed surface of the high-voltage output terminal. A semicircular protruding strip-shaped soldering blocking projection 69 is formed for the purpose.

In addition, in the integrated bobbin of the present invention, the high-pressure side input terminal 53`, which is conventionally installed in the high-pressure bobbin, is installed on the same surface as the terminal terminal 53 on the upper flange 51.

The one-stage flange 55, the two-stage flange 56 and the three-stage flange 57 is formed with a carry-over portion through which coils wound on each bobbin can pass between the flanges, and the carry-over portion is formed in a radial direction with a thin film. It is composed of a carry-over film 67 and a carry-over groove 68 formed in a groove shape on the outer side of the carry-over film so as to prevent shorting even when the coil is carried over.

That is, in order to prevent the carryover slots in the conventional bobbin to be shorted between coils, the inside of the carryover groove 68 is formed with a thinner film than the flange so as to ensure insulation between coils above and below the flange.

A coil guide protrusion 99 for guiding the connection of the coil is formed on one side of the edge of the first stage flange 55 to protrude in a radial direction so that a coil connected from the high voltage input terminal 53` installed on the upper frame is easily formed. It was guided to make.

In the integrated bobbin of the present invention configured as described above, the core insertion hole 65 is formed at the center thereof, and the core part of the ferrite core 70 is inserted into the core bobbin.

The integrated bobbin of the present invention is installed directly inside the case without placing a pedestal at the bottom thereof.

To this end, the present invention for the preferred coupling structure of the integrated bobbin and the case of the present invention to form a coupling guide piece (54, 54`) in the integral bobbin as shown in Figure 3 or 9 to 11 and the guide projection ( 72).

That is, a plurality of radially protruding coupling guide pieces 54, 54 ′ are formed at the edge of the upper flange 51 of the integral bobbin, and the coupling guide pieces 54 are fitted in two rows on the inner wall surface of the case. A plurality of guide protrusions 72 are formed vertically, but at a predetermined position of the guide protrusion, a locking jaw 73 is formed to prevent entry of the coupling guide piece, and the integrated bobbin has a coupling guide piece 54 of the case. It is fixed in the case by being inserted into the guide protrusion 72, the entry into the predetermined position is controlled by the locking jaw, the amplification circuit portion 80 is configured in the space of the lower portion of the integral bobbin secured by the locking jaw .

The case of the present invention takes the shape of the top surface of the hexahedron (left side in the drawing) is opened, and the coated surface is filled with epoxy 100 is coated. That is, as shown in FIG. 9 or FIG. 11, the upper surface is composed of a surface filled with epoxy 100, and terminal terminals 53 and 53` protrude above the surface.

Of course, the lower one side of the case is formed through the lead is formed through the lead line of the anode 이 (90) connected to the amplification circuit portion.

The coil winding method of the present invention having the above-described configuration will be described with reference to FIG. 3, wherein a plurality of coils are wound around the low voltage bobbin 59 of the upper portion, and the wound coils are each terminal terminals. 53, the connection is dipped and soldered at one time.

The coil wound on the high pressure bobbin is a single wire, and is soldered by connecting the starting point to the high voltage input terminal 53` of the upper flange, and the coil is led to the lower portion and wound around the coil guide protrusion 99 of the first stage flange. Guided through the carry-over groove (68) and wound on the high-pressure primary bobbin 60, the coil is again wound into the high-pressure secondary bobbin (61) through the carry-over groove 68` of the two-stage flange (56) The coil is again wound into the high pressure tertiary bobbin through the carry-over groove 68 ″ of the three stage flange 57 and connected to the high voltage output terminal 63 of the lower flange 58 to be soldered.

When soldered to the high voltage output terminal 63, the soldering lead is introduced into the high voltage output terminal support protrusion 64, which is the bottom of the soldering blocking protrusion, by the soldering blocking protrusion 69 formed on the high pressure output terminal support protrusion 64. It is possible to prevent soldering lead from penetrating into the coil to be blocked and connected or to oxidize at high temperature in the coil, thereby lowering the defective rate.

When the winding of the coil is completed as described above, the ferrite core 70 is fastened to the integrated bobbin, the fastened integral bobbin is inserted into the case 71 is installed. At this time, the coupling guide piece (54, 54`) of the integral bobbin is inserted into the groove between the guide protrusions 72 of the inner wall of the case, it is restricted to enter more than a predetermined amount by the locking jaw 73, the lower portion is naturally commutated The space in which the circuit unit 80 may be installed is formed. Of course, before inserting the integrated bobbin, the rectifier circuit unit 80 should be installed in the lower case.

After the installation is completed, the assembly is completed by filling and blocking the epoxy to the top of the casing.

The present invention having such a configuration may be used more effectively, especially black and white door phone, air cleaner (including negative ion generator) or ozone generator.

As described above, the present invention can reduce mold cost, reduce the assembly process, and reduce assembly time by reducing the parts of the conventional six parts to three, and greatly reduce the production cost, and also greatly reduce the production cost. To provide.

In addition, the present invention can minimize the defects generated during the assembly process because the assembly process is simple, and also by using the integral bobbin can greatly reduce the short-circuit or disconnection between the coils significantly contribute to quality improvement.

Claims (7)

A coil having a coil for boosting and having a terminal terminal connected to the coil, a ferrite core inserted through the bobbin, and a rectifying circuit for stabilizing an output voltage boosted by the coil and transmitting it to the anode cap; An FTV comprising an anode cap connected to the rectifier circuit, a case in which the bobbin, a ferrite core, and a rectifier circuit are built-in; The bobbin is a fbit having an integral bobbin, characterized in that consisting of an integral bobbin formed integrally with the high pressure bobbin and the low pressure bobbin. The method of claim 1; The integral bobbin is formed with a plurality of flanges spaced apart from each other on the outer surface of the drum (95), each of the flanges having a single bobbin characterized in that consisting of a low-pressure bobbin and a high-pressure bobbin of the primary. The method of claim 2; The flange is composed of an upper flange 51, a first flange 55, a two-stage flange 56, a three-stage flange 57 and a lower flange 58 from top to bottom. ) And the first stage flange (55) is composed of a low pressure bobbin, between the first stage flange (55) and the second stage flange (56) is composed of a high pressure primary bobbin (60), the second stage flange (56) And the three-stage flange 57 is composed of a high pressure secondary bobbin 61, and between the three-stage flange 57 and the lower flange 58 is composed of a high pressure tertiary bobbin 62, characterized in that FTV having a. The method of claim 3; A plurality of coil guide grooves 82 and a plurality of terminal fixing protrusions 52 are formed in the upper flange 51, and a plurality of terminal terminals 53 protrude vertically into the plurality of terminal fixing protrusions. It is fixed, the lower flange is formed by protruding the high-voltage output terminal support protrusion 64 to the outside and the high-voltage output terminal 63 is installed there to block the growth of the soldering lead around the fixed surface of the high-voltage output terminal F-type having an integral bobbin, characterized in that for forming a semi-circular protruding strip-shaped soldering blocking projection. The method of claim 3; The first stage flange 55, the second stage flange 56 and the third stage flange 57 are formed with a carry-over portion through which coils wound around each bobbin can pass between the flanges, and the carry-over portion is formed in a radial direction with a thin film. F carry having an integral bobbin, characterized in that the carry-over film 67 and the carry-over groove 68 formed in a groove shape on the outer side of the carry-over film are configured to prevent shorting even when the coil is carried over. . The method of claim 5; The edge of the one-stage flange (55) has an integral bobbin characterized in that the coil guide protrusion (99) for guiding the connection of the coil is formed to protrude in the radial direction. The method of claim 4; A plurality of radially protruding coupling guide pieces 54 and 54` are formed at the edge of the upper flange 51, and the guide protrusions are formed in two lines on the inner wall surface of the case so that the coupling guide pieces 54 are fitted. A plurality of 72 is formed vertically, but at a predetermined position of the guide protrusion, a locking jaw 73 is formed to prevent the entry of the coupling guide piece, and the integral bobbin has a coupling guide piece 54 with the guide protrusion 72 of the case. It is fixed in the case by being inserted into the controllable entry into the predetermined position by the locking jaw, the space of the lower portion of the integral bobbin secured by the locking jaw has an integrated bobbin characterized in that the amplification circuit is configured FT Beatty.