KR0158605B1 - Focus unit connector of fbt - Google Patents

Abstract

The present invention relates to a focus unit coupling apparatus capable of stably coupling and fixing a focus unit on which a ceramic substrate exposed on the back is mounted on a focus unit coupling portion provided on one side of an FBT case. In the coupling part 4 of the focus unit 2 formed on one side of the FB case 5, a protective partition wall 6 spaced apart from and adjacent to the ceramic substrate 1 which is exposed to the rear surface of the focus unit 2 is installed. FB case (5) in the microcavity (S) between the protective partition (6) and the ceramic substrate (1) on the back of the focus unit (2) is installed to ensure a microcavity (S) is installed as a single injection molding The hard insulating resin 3 for coil insulation inside is filled with a small amount to be cured.

Accordingly, the focus unit is firmly coupled and fixed on the coupling portion of the FBT case while improving workability by eliminating the coating fixing of a separate soft insulating resin to prevent breakage of the ceramic substrate on the back of the focus unit. Damage to the ceramic substrate due to trace filling and curing of the resin can be prevented.

Description

Focus unit coupling device for flyback transformers (FBT)

1 is a view for explaining a focus unit coupling state of a general FBT.

2 is an exploded perspective view for explaining a conventional FBT focus unit coupling structure.

(b) is a sectional front view of said second figure (A).

3 is a view for explaining a focus unit coupling state of the FBT according to another conventional embodiment.

Figure 4 is a schematic perspective view for explaining the focus unit coupling state of the FBT according to the present invention.

5 is a cross-sectional view of the coupling state of the FBT focus unit of the present invention.

Figure 6 (a) (b) is a view showing each of the protective partitions installed on the coupling portion of the FBT case of the present invention.

* Explanation of symbols for main parts of the drawings

1: ceramic substrate 2: focus unit

3: hard insulation resin 4: bonding part

5: FBT case 6: protective bulkhead

8: resin through hole 9: notch hole

S: microspace

The present invention is a flyback transformer (hereinafter referred to as FBT), which is a high voltage generator for supplying high voltage to CRTs of TVs and monitors, wherein the low pressure bobbin and the high pressure bobbin are mutually coupled to each other. A focus unit coupling device for stably coupling and fixing a focus unit installed while a ceramic substrate is exposed to a back side of a case, and particularly, on a focus unit coupling portion provided on one side of an FBT case. A protective barrier wall integrated with the FBT case is installed, and an exposed ceramic substrate on the rear side of the focus unit is installed in close proximity, and a small amount of insulating resin for insulation of the FBT is integrally formed between the protective barrier wall and the ceramic substrate on the rear side of the focus unit. By filling, the focus unit is attached to one side of the case of the FBT at the back of the focus unit. In addition to eliminating the separate filling and curing process of the soft insulating resin to prevent breakage of the exposed ceramic substrate, the ceramic substrate installed in the state exposed to the focus unit and its back on the coupling part of the FBT case is fixed and fixed. The present invention relates to an FBT focus unit coupling device capable of preventing damage to a ceramic substrate of a focus unit due to a small amount of filling of hard insulating resin.

In general, in the method for fastening and fixing the focus unit on one side focus unit coupling part of the FBT case in which the high pressure bobbin and the low pressure bobbin are coupled to each other, as shown in FIG. The soft insulating resin 13 is separately injected onto the ceramic substrate 11 of the installed focus unit 12 and cured to remove the exposure of the ceramic substrate 11, and the coupling portion of the FBT case 15 coupled thereto ( The rear surface of the focus unit 12 is installed on the surface 14, and the inside of the FBT case 15 is filled with a hard insulating resin 16 for insulation of low pressure and high pressure bobbins to be integrally molded. Is done.

Focus unit 12 of the FBT is coupled as described above, after the ceramic substrate 11 provided on the back of the focus unit 12 is bonded on one side coupling portion 14 of the FBT case 15, the hard insulating resin ( In order to prevent breakage of the ceramic substrate 11 due to shrinkage that occurs during the curing of 16), a soft epoxy resin 13 is separately injected onto the ceramic substrate 11 and then cured. .

However, when the focus unit 12 is coupled to one side of the FBT case 15 as described above, the work due to separately injecting and hardening the soft insulating resin 13 into the ceramic substrate 11 positioned on the rear thereof is cumbersome and soft. After the insulating resin is cured, the focus unit 12 is installed in the FBT case 15, and thus, the manufacturing time is increased by injecting and curing the hard insulating resin again.

In addition, after coupling the focus unit 12 to one side of the FBT case 15, and filling the hard insulating resin 16 and curing it, the height of the soft epoxy resin 13 injected into the ceramic substrate 11 and cured As a result, the focus unit 12 on the FBT case 15 is increased, thereby increasing the external size of the FBT.

On the other hand, recently, it has been proposed to install a partition on one side of the FBT case and to install a focus unit to protect the focus unit ceramic substrate.

That is, in the focus unit coupling structure of the FBT according to Japanese Utility Model Publication No. 1-36377, as shown in FIG. 2, the cutout portion 23 on the one side coupling portion 22 of the FBT case 21 is shown. A partition wall 24 having a long length is installed, and a focus unit 26 made of a ceramic substrate 25 is mounted on the coupling portion 22, and the FBT case 21 is disposed inside the focus unit 26. On the back, the hard insulating resin 27 for insulation is integrally filled so as to be molded.

However, in the focus unit 26 mounted on the coupling portion 22 of the FBT case 21, the separation distance, which is the clearance gap between the ceramic substrate 25 and the partition wall 24 on the rear surface thereof, is shown in FIG. It becomes too large as in (B), and also a large amount of insulating resin is filled as it is through the wide cutout 23 formed long in the partition wall 24 for the inflow of the insulating resin shrinkage phenomenon due to the curing of the insulating resin There is a disadvantage in that it causes the breakage of the ceramic substrate 25.

In addition, as shown in FIG. 3, after filling and hardening the hard insulating resin 37 inside the FBT case 31, the terminal insertion hole 33 is formed on the coupling portion 32 of the FBT case 31. The focus unit 35 is operated by inserting the rear terminal portion 36 of the focus unit 35 molded into an insulating resin by laying a plurality of ceramic substrates 34 on the rear surface thereof. In this case, the coupling force between the FBT case 31 and the focus unit 35 is extremely weak so that the focus unit 35 can be easily detached from the coupling unit 32 of the FBT case 31. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The object of the present invention is to provide a protective barrier for protecting the ceramic substrate on the coupling portion of the FBT case to which the focus unit mounted with the ceramic substrate exposed on the rear surface is coupled. Is installed, the protective partition and the ceramic substrate on the back of the focus unit close to each other to ensure a micro space, and the insulating resin for the insulation of the FBT between the micro spaces to be filled in a small amount integrally to cure the insulating resin Minimizes the shrinkage rate at the time, thereby eliminating the process of injecting and curing the soft insulating resin on the back of the focus unit to prevent breakage of the ceramic substrate, while stably coupling the ceramic substrate of the focus unit to the joint of the FBT case without damage. To provide a focus unit coupling device of the FBT that can be fixed .

Another object of the present invention, the protective barrier wall installed in the coupling portion of the FBT case is formed with a resin through hole for the inflow (pass) of a small amount of insulating resin is installed in the coupling of the focus unit on the coupling portion of the FBT case, the protection with the ceramic substrate An object of the present invention is to provide an FBT focus unit coupling device capable of preventing breakage of a ceramic substrate due to filling and hardening of hard insulating resin between partition walls.

As a technical means for achieving the above object, the present invention, the focus unit coupling portion provided on one side of the FBT case, the protective barrier is formed integrally with the FBT case at a close distance to the ceramic substrate exposed to the back of the focus unit; The micro-space is secured, and the micro-space between the protective partition and the ceramic substrate on the back of the focus unit has a focus unit coupling device of the FBT, which is configured to harden by hardly filling a small amount of hard insulating resin for coil insulation in the FBT case. By provision.

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

4 is a schematic perspective view illustrating a focus unit coupling state of an FBT according to the present invention, in which a focus unit 2 on which a ceramic substrate 1 is installed is formed on one side of an FBT case 5; 4) It is installed on the phase and hardened as a hard insulating resin (3) to be bonded.

In addition, in the coupling part 4 of the focus unit 2 formed on one side of the FBT case 5, a protective partition 6 spaced apart from the ceramic substrate 1 of the focus unit 2 is spaced apart from the FBT case ( 5) is installed integrally to ensure the micro space (S), the FBT case (5) in the micro space (S) secured between the protective partition 6 and the ceramic substrate 1 on the back of the focus unit (2) Hard insulation resin (3) for coil insulation in the) is made of a configuration that is filled with a small amount of hardened integrally.

The protective partition wall 6 installed on the coupling part 4 of the FBT case 5 has a resin currency hole 8 or a cutout groove 9 for a small amount of passage of the hard insulating resin.

Referring to the operation and effects of the present invention having such a configuration as follows.

As shown in Figures 4 to 6, the coupling portion 4 of the focus unit 2 formed on one side of the FBT case (5) installed inside the high-pressure bobbin and low-pressure bobbin is mutually coupled therein When the focus unit 2 is coupled to and fixed to the upper surface of the focus unit 2, the ceramic substrate 1 positioned on the rear surface of the focus unit 2 faces the coupling part 4 so as to face the coupling part 4. Assemble the focus unit (2) in 4).

On the other hand, in the coupling portion 4 of the FBT case 5 to which the focus unit 2 is coupled, a protective partition 6 composed of an FBT case and an injection molded body is integrally installed and coupled thereto. And close to the ceramic substrate (1).

Between the protective partition 6 installed on the coupling portion 4 of the FBT case 5 and the ceramic substrate 1 of the focus unit 2 installed thereon, the space is in close proximity to each other so that only a minimum space is formed. In this case, the stress of the ceramic substrate (1) generated by the shrinkage phenomenon during hardening due to the filling of the hard insulating resin by the separation distance between the protective partition 6 and the ceramic substrate 1 is formed. It is possible to minimize the and to prevent the destruction of the ceramic substrate (1).

Subsequently, in the state where the protective partition 6 of the coupling part 4 and the ceramic substrate 1 of the focus unit 2 are installed in close proximity, as shown in FIGS. 5 and 6, the FBT case 5 When filling the epoxy resin which is a hard insulating resin (3) for the insulation of the high-voltage coil of the bobbin (not shown) mounted inside the), the hard insulating resin (3) is not directly filled on the ceramic substrate (1) To infiltrate a small amount indirectly through the resin communication hole 8 or the cutout hole 9 installed in the protective partition 6.

Therefore, when the filling of the epoxy resin, which is a hard insulating resin 3, is completed and then hardened in the FBT case 5, the ceramic substrate (through the resin through hole 8 or the cutout hole 9 of the protective partition 6). A small amount of hard insulating resin 3 penetrated between the adjacent microcavity S between 1) and the protective partition 6 is hardened without focusing on the ceramic substrate 1 during curing thereof and is focused. The ceramic substrate 1 of the unit 2 is protected while being securely coupled to the FBT case 5 in an insulated state.

As described above, according to the FBT focus unit coupling device according to the present invention, a protective partition is installed on the coupling portion of the FBT case to which the focus unit is coupled, so as to be spaced close to the ceramic substrate installed in a state exposed to the rear surface of the focus unit. Therefore, the ceramic substrate of the focus unit is firmly bonded to the coupling part of the FBT case while improving workability by eliminating the injection and curing process of a separate soft insulating resin to prevent breakage of the ceramic substrate on the back of the focus unit. As well as being fixed, there is an excellent effect to achieve a firm coupling state of the focus unit due to the small amount of filling and hardening of the hard insulating resin.

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 (4)

Focus unit F2 on which the ceramic substrate 1 is installed on the back is mounted on the coupling part 4 formed on one side of the FBT case 5, and the focus of the FBT is filled and cured and combined as a hard insulating resin 3. In the unit, the coupling portion 4 of the focus unit 2 formed on one side of the FBT case 5 is spaced close to the ceramic substrate 1 exposed to the rear surface of the focus unit 2. The protective partition 6 is integrally installed with the FBT case 5 so as to secure the microcavity S, and the microcavity between the protective partition 6 and the ceramic substrate 1 on the back of the focus unit 2 ( S) focus unit coupling of the FBT, characterized in that the hard insulating resin (3) for coil insulation in the FBT case (5) is integrally filled with a small amount of hardened resin so as to stably protect the ceramic substrate of the focus unit. Device. 2. The FBT according to claim 1, wherein the protective partition wall (6) provided in the coupling portion (4) of the FBT case (5) is formed with a resin call hole (8) for the passage of the hard insulating resin (3). Focus unit coupling device. According to claim 1, wherein the protective partition wall (6) installed in the coupling portion (4) of the FBT case (5), characterized in that the cut-out hole (8) for the passage of the hard insulating resin (3) is formed Focus unit coupling device. According to claim 1, wherein the protective partition 6 is installed in the coupling portion 4 of the FBT case 5, is formed of an injection molding integral with the FBT case 5, the same material as the FBT case (5) Focus unit coupling device of the FBT characterized in that configured.