JPS62252045A - Deflecting device - Google Patents

Abstract

PURPOSE:To improve the insulation property of a horizontal deflecting coil and a vertical deflecting coil, by solidifying either the horizontal or the vertical deflecting coil with an insulating resin and arranging the other deflecting coil over the insulating resin layer. CONSTITUTION:An insulating resin 5 is poured over a vertical deflecting coil 3 accommodated in a common use slot 4c, and the width of the insulating resin 5 from the end of the coil is made even by controlling the amount of the pouring resin. After solidifying the vertical deflecting coil 3 with the poured resin 5, a horizontal deflecting coil 2 is wound over the vertical coil 3 or a wound horizontal deflecting coil 2 is accommodated in the slit. Therefore, since an insulating layer consisting of the insulating resin 5 is formed between the horizontal and the vertical deflecting coils 2 and 3, the both coils 2 and 3 never contact closely and the voltage-proof property is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deflection device used, for example, in a display cathode ray tube having an in-line electron gun.

[Prior art] Flute ζMI Toho wo Shima, ζ no Ichi mo fishing chair 1i~sh I1
) In FIG. 5, which shows the cross-sectional shape of the core in the single-stone yoke, a plurality of slots (4) are provided on the inner surface of the core (1) facing the cathode ray tube.
), two types of excitation coils are embedded, namely a horizontal deflection coil (2) and a vertical deflection coil (3).

The winding distribution of these two types of deflection coils (2) and (3) is designed to satisfy the self-convergence condition. That is, the number of slots, the pitch, and the slot depth are set so that the horizontal deflection coil (2) has a bottle-cushion magnetic field distribution, and the vertical deflection coil (3) has a bursill-shaped magnetic field distribution.

However, the 8-wire distribution conditions required for the horizontal deflection coil (2) and the winding distribution conditions required for the vertical deflection coil (3) do not necessarily match, and for example, in a cathode ray tube using an in-line electron gun. , if the winding distribution conditions required for the horizontal deflection coil (2) of the deflection yoke are prioritized, the side beam color shift YH in the horizontal direction of the vertical line on the surface of the screen (lO) will be as shown in Figure 6. Hail. In this figure, the blue beam (7) is shown to the right of the red beam (6).

On the other hand, on the contrary, the I! required for the vertical deflection coil (3)! 3 line segment linearity conditions First, as shown in Figure 7, the color shift XH of the horizontal line in the horizontal force direction on the surface of the screen (10)
Hail!

By the way, if the degree of these color shifts exceeds the permissible level, conventionally, horizontal and vertical deflection coils (2),
The above color shift has been corrected by adding an auxiliary coil other than (3) or by using a magnetic field forming element such as a magnetic piece or a permanent magnet.

However, the use of auxiliary coils and magnetic field forming elements increases costs and complicates the structure.

Therefore, as a countermeasure for this, in Figure 0, where the core structure as shown in Figure 4 is considered, the inner surface of the core (1) facing the cathode ray tube has a dedicated slot for the horizontal deflection coil near the x-x axis. ) (4a) is provided, and a water moth deflection coil (2) is housed within this dedicated thrower (4a). Further, a dedicated slot (4b) for the vertical deflection coil is provided near Y-Y@, and the vertical deflection coil (3) is housed in this dedicated slot (4b).

On the other hand, a common slot (4c) having a larger slot depth than these is provided between the dedicated throwers (4a) and (4b). This shared thrower) (4c
) are provided symmetrically, eight in total, at positions inclined at approximately 45 degrees with respect to the xx and Y-Y axes.

There is a horizontal deflection coil (2) and a vertical deflection coil (3) in it.
are staggered in the radial direction of the core (1) and housed together.

As mentioned above, in addition to the dedicated slots (4a) and (4b), a common slot (4c) is provided, and the common slot (4c) is provided.
4c) horizontal deflection coil (2) and vertical deflection coil (3).
), the self-convergence condition can be applied independently to both coils, and the circumferential windings of the horizontal and vertical deflection coils (2) and (3) necessary to satisfy the self-convergence condition can be applied independently to both coils. distribution can be realized.

[Problems to be solved by the invention] However, in the structure shown in FIG.
(4C), the copper wire of the horizontal deflection coil (2) and the copper wire of the vertical deflection coil (3) are in close contact with each other, and both coils (2) are in close contact with each other in this part.

(3) Since there is a potential difference between them, there is a problem in terms of withstand voltage.

[Problems to be Solved by the Invention] This invention has been made in order to solve the above-mentioned conventional problems, and its purpose is to provide a deflection device with improved insulation between a horizontal deflection coil and a vertical deflection coil. It is said that

[Means for Solving the Problems] A deflection device according to the present invention includes solidifying one of the horizontal deflection coil and the vertical deflection coil with an insulating resin, and disposing the other coil on the insulating resin layer. It is characterized by what it did.

[Function] In the deflection device according to the present invention, an insulating resin layer is formed between the horizontal deflection coil and the vertical deflection coil, so that the voltage characteristics between the two coils are improved.

[Embodiments] Examples of the present invention will be described below with reference to the drawings.

1 to 3 schematically show an embodiment of the deflection device according to the present invention. In FIG. 3, the magnetic core (1) has a dedicated thrower (4b), a shared thrower )
(4c) are provided, and these throwers) (4
b) A vertical deflection coil (3) is housed in (4c). Shared thrower) Depth of (4c) is dedicated thrower)
(4b), and the vertical deflection coil (3) is housed deep inside the shared thrower (4c).

In this state, as shown in Fig. 2, insulating resin (5), such as hot melt manufactured by Sanwa Kagaku Kogyo Co., Ltd., is applied from above the vertical deflection coil (3) housed in the common slot (4C). The amount of resin is controlled so that the thickness of the insulating resin (5) from the wire end becomes a uniform insulating layer of 0.8 mm or more, for example, 1.5 mm. At this time, the thickness of the resin may be controlled by fitting a jig (6) as shown in FIG. 3 into the common slot (4C).

After pouring the insulating resin (5) and solidifying the vertical deflection coil (3), as shown in Figure 1, the horizontal deflection coil (2) is
) is wound over the vertical deflection coil (3), or the wound horizontal deflection coil (2) is housed in the slot.

According to such a structure, an insulating layer made of insulating resin (5) is formed between the horizontal deflection coil (2) and the vertical deflection coil (3) housed in the common slot (4c). Both coils (2) and (3) are not in close contact with each other, and the withstand voltage characteristics are improved. In addition, since the vertical deflection coil (3) is solidified by pouring the insulating resin (5) into the common slot (4c), the common slot of the vertical deflection coil (3) is
(4c) can also be fixed at the same time.

In the above embodiment, the insulating resin (5) is placed on the vertical deflection coil (3) housed in the common slot (4c).
) is poured and fixed, and then the underwater deflection coil (2) is housed in the deflection device. However, the same applies even if the combination of horizontal deflection coil (2) and vertical deflection coil (3) is reversed. Needless to say, it has the following effect.

Moreover, although the structure in which the coil wire is housed in the slot of the magnetic core (1) has been described above, the material of the core (1) does not have to be magnetic, but may be a molded product made of insulating resin.

Furthermore, even if it does not have a configuration with slots all around the circumference, it is possible to wind one coil, fix it with resin, and then wind the other coil, as in conventional general deflection devices. This can also be applied to cases.

[Effects of the Invention] As described above, according to the present invention, one of the horizontal deflection coil and the vertical deflection coil is solidified with an insulating resin, and the other coil is disposed on the insulating resin layer. As a result, an insulating layer is formed between the vertical deflection coil and the horizontal deflection coil, so that the separation distance between the horizontal deflection coil and the vertical deflection coil satisfies general standards, and the withstand voltage characteristics can be improved. , the insulating layer can also be manufactured relatively easily.

[Brief explanation of drawings]

FIG. 1 is a partial cross-sectional view of a deflection device according to an embodiment of the present invention, FIGS. 2 and 3 are partial cross-sectional views for explaining the manufacturing process of the deflection device according to an embodiment of the present invention, and FIG. 5 is a sectional view of a conventional deflection device, and FIGS. 6 and 7 are diagrams for explaining color shift in the deflection device of FIG. 5. . (2)...Horizontal deflection coil, (3)...Vertical deflection coil, (5)...Insulating resin. In addition, in FIG. 1, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A deflection device characterized in that one of the horizontal deflection coil and the vertical deflection coil is solidified with an insulating resin, and the other coil is disposed on the insulating resin layer. (2) The horizontal deflection coil and the vertical deflection coil are housed in slots formed in the core, and after one coil is housed, an insulating resin is poured into the slot to solidify the one coil. Deflection device according to item 1.