JPS5932228Y2 - terminal pin - Google Patents

Description

[Detailed description of the invention] The present invention relates to a terminal pin used for the secondary high-voltage coil of a flyback transformer, and in particular, the high-voltage coil is divided into multiple units and these coil units are connected in series via a diode. This invention relates to improvements in terminal pins used to connect coil wires and diodes.

First, prior to explaining the present invention, a flyback transformer used in a television receiver will be explained with reference to FIG.

In this Figure 1, there is a low voltage primary coil 1 and a high voltage primary coil 2.
A flyback transformer 3 is configured with the secondary coil 2, but the secondary high voltage coil 2 includes, for example, 3
Since a very high voltage of about 0 KV is applied, as shown in Fig. 1, it is divided into multiple units 4a, 4b, and 4c, and these coil units 4a, 4b, and 4c are connected to diodes 5a and 5b. The withstand pressure is increased by connecting the valves in series.

The external shape of such a high-voltage coil 2 is, for example, as shown in FIG. Diodes 5a and 5b are arranged.

By the way, such a coil bobbin shape requires a groove 8 for arranging the diode 5.
There is a drawback that the height and axial length (H) of the coil bobbin 6 are correspondingly higher, making the outer dimensions of the flyback transformer thicker.

Therefore, by winding some of the coil bobbins (4b) in the opposite direction, a configuration as shown in FIGS.
As shown in Fig. 2, the axial arrangement is performed.

According to such a winding structure, the height and axial length of the high-voltage coil 2 on the secondary side can be reduced, and the stray capacitance of the coil can be reduced.

However, the spacing between the flanges 7' of the coil hobbin 6' as shown in FIG. It is difficult to maintain a long distance between the diode body, which is pressed when attaching the diode, and the dot when attaching the diode.

This diode 5' is generally a semiconductor element and is extremely sensitive to heat, so it is necessary to solder it at a certain distance from the diode body. If soldering is performed at a certain position, it is not preferable because it will cause adverse effects such as deterioration or destruction of the diode characteristics.

The present invention was developed in view of the conventional circumstances, and is a method for connecting wire rods and diodes for high-voltage coils in which parts of multiple coil units are connected in opposite directions to reduce the external dimensions of a flyback transformer. The object of the present invention is to provide a terminal pin for connecting the lead wire of the diode, which can be soldered at a position far from the diode body.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

4 1 and 5 show a first embodiment of the present invention, and FIG. 4 is a plan view showing a high voltage coil 20 of a flyback transformer using terminal pins 10 as an embodiment. FIG. 5 is a perspective view showing only the terminal pin 10 taken out.

As shown in FIGS. 4 and 5, the high voltage coil 20 includes, for example, three coil units 21a.

The coil unit 21b is divided into 21b and 21c, and the coil unit 21b is wound in the opposite direction to the other coil units 21a and 21c.
21c are connected in series via diodes 22a and 22b, respectively.

Here, the coil bobbin 23 is connected to each coil unit 2 described above.
Flange portions 24a to 2 for dividing 1a, 21b, and 21c
4d, and coil units 21a and 21b.
, 21c are further divided into small flange portions 25 for improving pressure resistance.

Next, the terminal pin 10 is formed of a conductor such as a metal plate, and is connected to the flange 24b of the coil bobbin 23.

24c, a protrusion 12 for wrapping and electrically connecting the end of the wire of the coil unit 21, and a lead wire 2 of the diode 22.
Arm part 13 for electrically connecting 6...
The arm portion 13 is extended in a direction away from the diode 22 by, for example, being bent relative to the main body of the terminal pin 10.

Further, the leg portion 11 has a cut-and-raised protrusion 14, and the end of the cut-and-raised protrusion 14 in the direction opposite to the embedding direction is slightly cut and raised, so that the terminal pin 10 can be easily attached to the terminal pin 10. Even if a force is applied in the direction of removal, the tip of the cut-and-raised projection piece 14 will catch on the wall of the embedded hole, etc., and the effect of preventing removal can be obtained.

Two protrusions 12 are formed on both sides of the leg 13.
For example, when using a pair of terminal pins 10 of the same shape, even if one of them is rotated by 180 degrees, the connection with the wire end of the coil unit 21 can be made over the shortest distance.

The connection between the protrusion 12 of the terminal pin 10 and the wire end of the coil unit 21 is achieved by simply winding the wire several times.
A so-called wire wrapping connection, a soldering connection, or the like may be used.

Next, a notch 15 for inserting the lead wire 26 of the diode 22 is formed at the tip of the arm 13, and the button is pressed.
A connection is made with a lead wire 26 by pressing a button in this notch 15.

This notch 15 is connected to the terminal pin 1 with respect to the diode body.
0, and the soldering increases the distance from the point to the diode body 1.

The arm portion 13 may be bent at an angle of, for example, 4♂ to 90° with respect to the main body of the terminal pin 10, and may be bent after cutting or punching a metal plate or the like. It may be bent at the same time as punching and pressing.

When attaching such a terminal pin 10 to the coil bobbin 23, for example, as shown in FIG. It is preferable to support the diode 26 in a direction oblique to the diode 26 because it allows a wider distance between the main body of the diode 26 and the soldering point.

Of course, as in other specific examples shown in FIGS.
It is also possible to arrange it so that it supports.

The terminal pin 10 used in FIG. 6 is the same as in the first embodiment.

According to the terminal pin 10 having the above-described configuration, for the pair of terminal pins 10 for supporting the diode 22, the distance between the dots of the respective arm portions 13 can be widened, The distance from the diode body to the soldering point can be longer.

Therefore, not only can the adverse effect of heat when soldering the lead wire 26 of the diode 22 to the arm portion of the terminal pin 10 be minimized, but also the lead wire 26 can be soldered to the arm of the terminal pin 10.
6 is relatively long, making it easier to handle.
Equipped with a ring improves work efficiency.

Further, since the cut-and-raised piece 14 of the leg portion 11 of the terminal pin 10 prevents the terminal pin from being removed, embedding and fixing can be easily and reliably performed.

Moreover, since the protrusions 12 are formed on both sides of the arm part 13, even if the arm part 13 rotates 1800 times, it is difficult to wrap or connect the wire end of the coil unit 21 to whichever of these protrusions 12 is closer. Thus, a pair of terminal pins 10 having the same shape can be obtained.

Furthermore, a notch 15 is provided at the tip of the arm 13, and the lead wire 26 of the diode 22 is connected to this notch 15.
Since the diode 22 can be inserted and temporarily fixed, the work efficiency when installing the diode 22 is also improved.

Next, FIG. 7 shows a second embodiment of the present invention, in which when the diode 22 is arranged diagonally with respect to the collar 24 as in FIG. The terminal pin 10 is shown with an arm 13' extending parallel to the terminal pin 10.

In this case as well, it goes without saying that the arm portion 13 extends away from the diode 22.

The other configurations are similar to those of the first embodiment, and the same parts are given the same reference numerals and the explanation will be omitted.

The effect is also similar to that of the first embodiment.

However, the present invention is not limited to these embodiments; for example, the protrusion 12 may be one piece, or the cut-out piece of the leg portion 11 or the notch portion 15 of the arm portion 13 may be omitted. good.

As is clear from the above description, the feature of the terminal pin according to the present invention is that the terminal pin is used to connect each coil unit of a high-voltage coil divided into a plurality of units in series via a rectifier. a leg part embedded and fixed in the coil unit; a protrusion part for connecting the wire end of the coil unit; and an arm portion.

Therefore, for example, even if a high-voltage coil is constructed by winding part of the coil unit in the opposite direction, the diode lead wire can be soldered at a position far from the diode body, and the diode installation In addition to being easy to work with, the adverse effects of heat on the diode during soldering can be kept to an extremely low level.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing an example of a flyback transformer, Fig. 2 is a plan view schematically showing the appearance of an example of a high voltage coil,
3A and 3B show other examples of high-voltage coils, A is a circuit diagram, B is a schematic plan view, and FIGS. 4 to 6 are the first example of the present invention.
FIG. 4 is a plan view showing the appearance of the high voltage coil, FIG. 5 is a perspective view showing only the terminal pin 10, and FIG. 6 is an example of another arrangement of the terminal pin 10. A is a plan view, B is a front view, and FIG. 7 is a plan view showing a second embodiment of the present invention. 10, 10'...terminal pin, 11...leg, 12
...Protrusion, 13...-arm part, 21... Coil unit, 22... Diode.

Claims (1)

[Scope of utility model registration request] The legs embedded and fixed in the coil bobbin are connected to the wire ends of the coil units by connecting the coil units of the high-voltage coil divided into multiple units in series through a rectifier. a protrusion for;
A terminal pin comprising an arm extending in a direction away from the main body of the rectifier and having a distal end thereof connected and fixed to a lead wire of the rectifier.