JPH0419767Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flyback transformer used in a television receiver, and more particularly to a flyback transformer integrally equipped with a high voltage variable resistor.

Such a flyback transformer with a high voltage variable resistor is, for example, as shown in a conventional embodiment shown in FIG. That is, in FIG. 1, 1 is a high-voltage variable resistor that is attached and fixed to a mounting portion 3a provided in a case 3 of a flyback transformer 2 with a tapping screw 4, and FIG. Fig. 1 is a perspective view of 1, and Fig. 1b is a partially sectional side view;
5b is a focus voltage output terminal that outputs the focus voltage adjusted by the focus voltage adjustment rotation shaft 6, 5c is a screen voltage output terminal that outputs the screen voltage adjusted by the screen voltage adjustment rotation shaft 7, and 5d is a ground. These terminals are vertically attached to a substrate 8 made of alumina or the like on which a resistor is printed and fired, and pin covers 9 are attached to the terminals other than the ground terminal 5d.
is applied and molded with insulating resin 10. The electrical connection between the high voltage variable resistor 1 and the flyback transformer 2 is as shown in FIG. Lead wires 12 and 13 connected to the input terminal 5a and drawn out from the screen voltage output terminal 5c and the ground terminal 5d are connected to the external connection terminals 3c and 3 of the flyback transformer 2 through the opening 3b.
It is connected to d. Conventionally, when a flyback transformer and a high voltage variable resistor are combined, the terminals of the high voltage variable resistor [input terminal 5a, focus voltage output terminal 5b, screen voltage output terminal 5c, and ground terminal 5d] are connected to the rotation axis. Since the lead wires 6 and 7 protrude from the opposite side, it is not only difficult to attach and connect to the flyback transformer 2, but also because the lead wires 12 and 13 are placed outside, the lead wires become large and difficult to manage as parts. It has the disadvantage of being difficult.

The present invention has been devised to eliminate such drawbacks, and will be described below with reference to FIGS. 3 to 6.

Figure 3 shows an embodiment of the high-voltage variable resistor used in the present invention; Figure 3a is a perspective view, and Figure 3b is a perspective view.
is a side view partially cut away. In this high voltage variable resistor 14, 15 is a rotating shaft for adjusting focus voltage, 16 is a rotating shaft for adjusting screen voltage, and 17 is a rotating shaft for adjusting focus voltage.
18 is a relay terminal connected to the resistor of the substrate 17, and an input terminal 19a and a focus voltage output terminal 19b are connected to the relay terminal 1, respectively.
8 (one not shown) in parallel to the substrate 17. Incidentally, pin covers 20, 20 are integrally formed on the case 14a of the high voltage variable resistor 14, and the input terminal 19a and the focus voltage output terminal 19b are connected to the pin covers 20, 20, respectively.
20 is exposed from the inside to the outside. On the other hand, for the screen voltage output terminal 19c and the ground terminal 19d, pins are used, one end of which is connected to the resistor of the substrate 17, and the pin bent in the middle so as to be parallel to the substrate 17. Now, as shown in FIG. 4, the case 21a of the flyback transformer 21 used in the present invention includes the high voltage variable resistor 1.
When the high voltage variable resistor 14 is stored in the storage portion 21b, the screen voltage output terminal 19c and the ground terminal 19d are connected to the case of the flyback transformer 21. It is arranged so as to protrude in the same direction as the direction in which the plurality of external connection terminals 22 protrude from the opening 21c. Therefore, as shown in FIG. 5, holes 23a are provided in the printed wiring board 23 at portions corresponding to the protruding positions of the screen voltage output terminal 19c, the ground terminal 19d, and the plurality of external connection terminals 22, and the holes 23a are filled with holes 23a. By inserting the terminals, the printed wiring board 23 and the flyback transformer 24 with a high voltage variable resistor are electrically coupled. FIG. 6 is a perspective view showing this coupled state. In addition, the screen voltage output terminal 19c
Since the voltage generated on printed wiring board 2 is relatively low,
There is no problem in connecting it directly to 3 by soldering or the like. In addition, in this embodiment, the flyback transformer 2
However, for example, the high voltage variable resistor provided in the case 21a of the flyback transformer 21 can be connected without using the input terminal 19a and the relay terminal 18 connected thereto. Notch (not shown) leading to the container storage section 21b
A high voltage may be supplied to the high-voltage variable resistor by a lead wire disposed inside the case, and in this case, the notch is covered by the case of the high-voltage variable resistor. Needless to say.

As described above, according to the book Flyback Transformer with High Voltage Variable Resistor, a high voltage variable resistor storage part is provided in the flyback transformer in which a plurality of external connection terminals protrude from the case opening. When the variable resistor is stored, the terminals of the high voltage variable resistor are arranged so as to protrude in the same direction as the external connection terminals of the flyback transformer, and the terminals of the high voltage variable resistor are arranged so as to protrude in the same direction as the external connection terminals of the flyback transformer. Since it is arranged so that it is inserted into a plurality of predetermined mounting holes formed on the printed wiring board together with the external connection terminal of the back transformer, the relatively low voltage screen voltage output terminal and earth terminal are connected to the printed wiring board. Therefore, there is no need to use lead wires to guide the screen voltage and ground to the external connection terminals of the flyback transformer as in the past, allowing for miniaturization and easy connection work. This has the effect of improving workability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional flyback transformer with a high-voltage variable resistor, Fig. 2 shows a high-voltage variable resistor used therein, and Fig. 2a is a perspective view;
FIG. 2b is a partially sectional side view. 3 shows a high voltage variable resistor used in the present invention, FIG. 3a is a perspective view, and FIG. 3b is a partially sectional side view. Fig. 4 is a perspective view of a flyback transformer with a high-voltage variable resistor of the present invention, Fig. 5 is a plan view of a printed wiring board, and Fig. 6 is a diagram of a flyback transformer with a high-voltage variable resistor of the present invention and a printed circuit board. It is a perspective view showing a connection. 14... High voltage variable resistor, 19c... Screen voltage output terminal, 19d... Earth terminal, 21b
...High-voltage variable resistor housing, 21c...Case opening, 21...Flyback transformer, 22...
Terminal for external connection.

Claims (1)

[Claims for Utility Model Registration] A high voltage variable resistor comprising a high voltage variable resistor case 14a that houses a substrate 8 on which a resistor is printed and fired, a rotation shaft 15 for adjusting focus voltage, and a rotation shaft 16 for adjusting screen voltage. 14, a high voltage variable resistor storage section 21b that stores the high voltage variable resistor 14, and a case opening 21 at the bottom.
A plurality of external connection terminals 2 protruding and exposed from c.
In the flyback transformer with a high voltage variable resistor integrated with a flyback transformer 21 comprising a high voltage variable resistor 21, the high voltage variable resistor 14 is provided with a high voltage variable resistor 14, and the high voltage variable resistor is provided in the high voltage variable resistor storage portion 21b. Vessel 1
4 is stored, the connecting connector 22 is inserted from the bottom.
A flyback transformer with a high-voltage variable resistor characterized by comprising a ground terminal 19d and a screen voltage output terminal 19c which protrude and are exposed in the same direction as the transformer.