JPS591435Y2 - High voltage generator bobbin device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a high voltage generator used, for example, as a flyback transformer for a color television receiver, and particularly relates to a bobbin device for a high voltage generator that has a characteristic in the terminal treatment of its coil.

In a flyback transformer of a television receiver, a high voltage is derived to be applied to an anode electrode of a picture tube.

This flyback transformer has a core arranged at the axis, a primary winding wound around the outer periphery of this core around a cylindrical bobbin, and further around the outer periphery of this primary winding. It has a structure in which a secondary winding is wound around a cylindrical bobbin.

When the bobbin wound with the primary and secondary windings is assembled, an anti-corona agent is filled between the windings to prevent corona discharge between the windings, other parts, and between the windings. Insulation is achieved.

When windings are installed on a bobbin in this way and the bobbin is assembled to form a transformer, the terminals of each winding must be safely and securely fixed to the ends of the bobbin so that they are not drawn out during assembly. There is a need.

In the past, the end of the winding was fixed to the end of the bobbin with adhesive tape, and when it was pulled out to the outside, a separate pull-out terminal was used to pull it out. This made work difficult as the tape would come apart and the windings would come undone.

This invention was devised in order to cope with the above-mentioned circumstances, and the object thereof is to provide a bobbin device for a high voltage generator that allows easy electrical extraction of the winding to the outside.

Embodiments of this invention will be described in detail below with reference to the drawings.

First, the circuit example of the high voltage generator according to this invention is shown in the first section.
As shown in the figure.

This circuit connects a secondary winding (high voltage winding) 13 to a plurality of first to
It is divided into n-th winding portions Nil to NIn, and these are connected in series by rectifier diodes Do to Din having the same polarity.

Note that 12 is a core, and 11 is a primary winding (low voltage winding).

According to this circuit system, a high frequency voltage is applied to the primary winding, but the diodes and the distributed capacitance generated on the secondary side form a rectifier circuit, and a DC voltage (high voltage) is obtained at the output terminal 14. This eliminates the need for a smoothing capacitor and is highly efficient.

The specific arrangement of components of the above circuit is as shown in FIG.

Now, for simplicity, the secondary winding 13 has four windings N, for example.
11. The explanation will be made assuming that it is divided into Nt□, N 13 and N 14.

That is, in FIG. 2g, A is the innermost bobbin, and the primary winding 11 is wound around the outer periphery to form a primary winding bobbin.

At one end in the axial direction of the primary winding bobbin A, a guide groove 21 continuous to the bobbin hollow is integrally molded in order to arrange the core.

This guide groove 21 extends in the radial direction of the bobbin,
A groove is partitioned off by a wall 22 at the tip.

Note that this wall 22 is cut off after the bobbin is assembled and filled with corona inhibitor.

Furthermore, the guide groove 21 is formed at one end of the primary winding bobbin A.
A terminal plate 20 disposed like a brim on this portion is attached to the side, or is formed integrally with the terminal plate 20 .

The structure of the terminal board 20 also has the features of this invention, and its specific structure and application will be explained in detail in FIG. 6 as well.

Further, at the radial end of the terminal plate 20, there is a support hole t1 into which a diode lead wire can be inserted. t2. t3. t4 is provided.

Further, on the surface of the terminal board 4 opposite to the bobbin side, a plurality of pin-shaped terminals P are provided.

, PI, P2゜P4... are planted.

The above-mentioned bobbin A for primary winding is inserted into the hollow of the first bobbin B1 for secondary winding after winding is completed.

The winding N1□ of the secondary winding 13 explained in FIG. 1 is wound around the outer periphery of this first bobbin B for the secondary winding.

This first bobbin flat for secondary winding has a drawer guide b1. b2
is provided to protrude in the axial direction.

This drawer guide is a feature of this invention and is the 4th drawer guide.
It is detailed in the figure.

The circumference of the first bobbin for the secondary winding described above is 2 as shown in Fig. 2C.
The second bobbin for the next winding is inserted into the hollow space.

This second bobbin for secondary winding has two
The winding N1□ in the next winding 13 is wound around its outer circumference.

This bobbin L is also provided with drawer guides C1 and C2 at both axial ends thereof, respectively, so as to protrude in the axial direction.

Further, the second bobbin B2 for the secondary winding described above is inserted into the third bobbin pressure Φ hollow for the secondary winding shown in FIG. 2d.

The winding N13 described in FIG. 1 is wound around the outer periphery of this third bobbin B3 for secondary winding.

This bobbin B3 also has drawer guides d1 at both ends in the axial direction. dz is provided to protrude in the axial direction.

Furthermore, the above-mentioned third bobbin B3 for secondary winding is
It is inserted into the hollow of the fourth bobbin B4 for secondary winding shown in Figure e.

The winding N14 of the secondary winding 13 described in FIG. 1 is wound around the outer periphery of this fourth bobbin B4 for secondary winding.

This bobbin B4 also has drawer guides e1 at both ends in the axial direction. e2 is provided to protrude in the axial direction.

The above-described secondary winding bobbins B1 to B4 are coaxially stacked, and the primary winding bobbin A is placed in the hollow of the first bobbin B1.
are inserted and combined.

In this case, the terminal plate 2 is attached to the primary winding bobbin A.
0 is integrated.

Also, each other drawer guide b2 of the first to fourth bobbins B1 to B4. C2, d2. e2 is also opposed to a terminal plate 25 (shown in FIG. 2f) similar to the terminal plate 20.

The terminal plate 25 is also located at the tip of the primary winding bobbin A.
It is integrated by the relationship between the protrusion and the hole.

After the bobbins and terminal plates are assembled using synthetic resin molding, and the predetermined electrical connections are made with the windings, diodes, terminals, etc., they are housed in a container 26 as shown in FIG. 2g.

Then, the space created inside the container 26 is filled with a filler 27 for preventing corona discharge and hardened.

By the way, the feature of this invention is that the secondary winding bobbin B
1 to B4 have a structure for processing the ends of the windings, for example, the bobbin body is shown in FIG. 3 and will be described as a representative.

This bobbin board is formed into a cylindrical shape from insulating synthetic resin, and has drawer guides d and d at both ends in the axial direction.
2 is formed.

This drawer guide d1. d2 is formed to protrude in the axial direction, and its tip is formed in a concave shape to engage the locking portion 3.
5.36 is set.

Furthermore, this drawer guide d1. d2 is the wall thickness l of the guide element d1 as shown in FIG. 4 (only the guide element d1 is shown as a representative).

is formed to be thinner than the wall thickness 11 of the bobbin body.

Next, the bobbin drawer guide d1. To explain how the d2 is used, first, the bobbin moyu has flanges 31 and 32 formed around the outer periphery of both axial ends thereof at an appropriate distance of 12 from the axial ends. is the drawer guide d1. Notches 31, . 32. is formed.

Then, a winding N1 made of ultra-fine wire is applied to the bobbin B3.
3 is wound, each collar part 31.3 is wound on the bobbin le.
．． 32. Discarded winding part 33, 34 set at the end of the
Discarded winding wires 37 and 38 are provided at the ends.

In other words, the winding starts with several turns at the discarded winding part 33.
It is wound around ten turns and fixed to the bobbin at the drawer guide d1 using, for example, an adhesive tape 40.

Similarly, a waste winding wire 38 is also wound at the waste winding portion 34 at the end of the winding, and is fixed with an adhesive tape 41.

Next, the waste windings 37 and 38 are separated from the waste winding section 33 except for the fixed points, as shown in FIG.

The separated parts are then twisted together to form a linear shape.

In this case, the discarded winding wire 37 is the drawer guide d1.
The twisted portion 37□ is pulled out from the concave locking portion 35 as a whole.

Twisted portions are derived at the ends of other bobbins in a similar manner.

When the bobbins whose terminals have been treated as described above are assembled as explained in FIG. 2, a terminal plate 20 is formed as shown in FIG.
It is disposed in a corresponding support hole t3 provided in the.

One node wire of the diode D12 disposed on the outer layer of the bobbin B4 is inserted into the support hole t3, and the beginning of the winding N13 is connected to the diode D1□.

Similarly, the twisted portions of the windings of other bobbins are drawn out into the support holes of the corresponding terminal plates.

Next, the connection structure for constructing the circuit shown in FIG. 1 is shown in principle in FIG. 7, and will be explained in conjunction with FIG. 2.

First, the winding Ntt of the secondary winding 13 is wound around the bobbin B1, and the twisted portion at the beginning of the winding is led out to the support hole t1 via the draw-out guide b1.

Further, the twisted portion of the bobbin B1 at the end of winding is led out to the support hole T1 via the drawer guide b2.

A diode D1□ is disposed between the support hole T and the support hole 12.

A twisted portion at the beginning of winding of the winding N1□ of the bobbin B2 is led out from the support beam t2.

The twisted portion at the end of winding of the bobbin B2 is led out to the support hole T2 via the drawer guide C2.

A diode D is connected between the support hole T2 and the support hole 13.
1□ is placed.

A twisted portion at the beginning of winding of the winding N13 of the bobbin B3 is led out to the support hole t3 via the drawer guide d1.

The twisted portion at the end of the winding N14 is led out to the support hole T3 via the draw-out guide d2.

A diode D13 is arranged between the support hole T3 and the support hole 14.

A mating portion of the winding N14 of the bobbin B4 at the beginning thereof is led out into the support hole t4 via the drawer guide e1.

The twisted portion at the end of the winding N14 is led out to the support hole T4 via the draw-out guide e2.

One lead wire of the diode D14 is inserted into this support hole T4, and the other end lead wire is disposed within the high voltage outlet portion 26 of the container 26 described in FIG. 2.

Note that the support hole of the terminal plate 20.25 or the locking portion at the tip of the drawer guide may be an open portion 42 as shown in FIG.

In other words, the opening 42 is shaped like a bay and the opening 42 is narrow.

Further, the drawer guide may be provided by embedding another conductive terminal by molding or the like.

Further, a conductive material may be attached to the inner periphery of the hole in the terminal board or the opening shown in FIG. 8 by plating or the like.

According to the above-mentioned invention, the winding wire can be easily processed at its terminal end, and can be easily drawn out to the outer layer of the bobbin salt without using a separate lead wire.

As a result, it is not necessary to attach the lead-out terminals and the like to the bobbins B1 to B4, and there is no need for additional machining and work for attaching them.

The bundled part as the twisted part is strong and effective when using ultra-fine wire as the winding wire, making it easy to pull out the work and ensuring safe work without wire breakage. It is also effective for improvement.

Furthermore, in this invention, the shape of the drawer guide shown in Fig. 4, especially the relationship with the wall thickness with the bobbin body, is extremely effective in preventing unnecessary contact when the twisted portion is pulled out and the bobbin is assembled. It is valid.

That is, as explained in FIG. 4, since the bundled portion is pulled in the direction of the arrow X shown in the figure, it can be inserted into the inner thin part of the guide element d1.

Therefore, it does not protrude from the wall surface toward the inner peripheral wall of the bobbin, and can be sufficiently spaced from the lower layer winding.

In other words, creepage can be maintained, which is effective in obtaining a pressure-resistant effect.

As explained above, this invention can provide a bobbin device for a high voltage generator that allows the windings of the bobbin to be drawn out easily, safely, and with a simple operation.

[Brief explanation of the drawing]

Figure 1 is a diagram showing a circuit example of a high voltage generator, Figure 2 a-
g is a perspective view showing each part of this invented device, FIG. 3 is a perspective view showing the main parts of this invented device, FIG. 4 is also a sectional view showing the main parts of this invented device, and FIG. FIG. 6 is a sectional view showing a part of the device according to the invention; FIG. 7 is a simplified diagram for explaining the wiring of a circuit to which the device is applied; FIG. 8 is a diagram showing a modification of the terminal plate and the guide element. 13...Secondary winding, N1□~NIn...
・Divided winding, D1□~Din...Diode,
A...Bobbin for primary winding, B1-B4...
・Bobbin for next winding, 20, 25 ・・Terminal board,
al, a2. bl, b2. C1, C2, di, d2. e
l, e2"""Drawer guide, 33.34...
・Discarded winding part, 35...Locking part, 37...
...Discarded winding wire, t1~L, Tz~T4...Support hole.

Claims (2)

[Scope of utility model registration request] (1) It has a primary winding wound around a primary winding bobbin and a secondary winding wound around a secondary winding bobbin, and this secondary winding is divided into multiple parts and each The windings are connected in series by connecting diodes in the same polarity direction to the ends of the divided windings, and by applying a high frequency voltage to the primary winding, pulses generated at the output ends of each divided winding are generated. In a high voltage generator that generates DC high voltage by rectifying and superimposing each of them, a plurality of bobbins are arranged such that the divided windings are wound respectively and coaxially stacked, and an axial direction of each bobbin is provided. A drawer guide is provided at the end of the bobbin to protrude in the axial direction, and has a concave portion formed at the protruding tip. An end portion of the winding wire is wound and fixed to the bobbin near the drawer guide, and the other portion is removed from the outer periphery of the bobbin and the wire is bundled so as to sandwich the drawer guide. A bobbin device for a high voltage generator, characterized in that the bobbin device for a high voltage generator is provided with a bundled portion of a discarded winding wire that is locked in the recessed portion and taken out in a radial direction of the bobbin. (2) A bobbin device for a high voltage generator according to claim 1, wherein the thickness of the drawer guide is thinner than the thickness of the bobbin body.