JPS598330Y2 - Bobbin for winding - Google Patents

Description

[Detailed description of the invention] When a high voltage winding is divided and wound into a plurality of parts in a flyback transformer, the divided windings (split coils) are connected in series through rectifying diodes.

For example, when a high-voltage winding is divided into three parts, the divided coils La, Lb, and LC are sequentially wound around the bobbin body 1 in this order, for example, from the left side to the right side, as shown in FIG.

Here, if the winding direction of the divided coil La and the winding direction of the divided coil LC are set in the same direction, and only the winding direction of the middle divided coil Lb is reversed, then the divided coil L
Since the distances between the end of winding a and the beginning of divided coil Lb and between the end of winding of divided coil Lb and the beginning of winding of divided coils I and C are relatively long, diodes Da and D
b can be installed using the space in the winding block of the middle split coil Lb as shown in the figure, so there is a diode mounting block between the split coils La and Lb and between the split coils Lb and I, c. Thereby, the bobbin main body 1 can be made compact.

FIG. 2 shows the electrical connection relationship of the flyback transformer using the connection method described above.

In this figure, 2 is a primary winding (primary coil), L is a high voltage winding (secondary coil), 3 is an output terminal, and 4 is a lead wire connected to the anode terminal of the cathode ray tube.

As shown in Figure 1, this invention is designed to avoid malfunctions when winding and reversing windings in a winding bobbin in which the winding direction differs depending on the winding block, for example. be.

An example of this invention will be explained in detail with reference to the drawings. First, the winding of the winding will be explained.

FIG. 3 is an explanatory diagram of an automatic winding device, in which the winding blocks A, B, and C in FIG. As shown in the bobbin body 1
If you wind it while rotating it counterclockwise,
The relationship between the bobbin body 1 and the winding is as shown in the figure.

6 is a coil wrapping body.

An example of the bobbin 10 according to this invention is shown in FIG.

Each winding block A-C corresponding to the split coil La-LC
Each of the sections is further divided into a plurality of sections by a plurality of flanges 11, and each of these flanges 11 has a winding transfer notch 12 for passing the winding to an adjacent section.

The direction of the notch 12 is selected to be approximately tangential to the circumference of the bobbin body 1, and the direction of the notch is selected depending on the winding direction.

Here, the direction of the cutout 12 refers to which direction the cutout opening faces, and in this embodiment, the direction is selected to be opposite to the winding direction, and the shape position of the adjacent collars 11 is approximately 1.
The difference is 80°.

Taking the notch 12A formed in the winding block A as an example, one notch piece 13a constituting the notch 12A is tangential to the circumference of the bobbin body 1, and the notch 12A is in a predetermined direction. Cut out the other notch piece 1 to match the opening angle.
The notch direction of 3b is determined.

In addition to the opening angle of this notch 12A, the notch angle of one notch piece 13a (the angle between the tangent and the notch piece 13a) is important.

When passing the winding from section X1 to X2, the winding is indicated by the arrow a
As shown in the notch 12 along the side wall of the notch piece 13a.
Pass through A and cross to the next section X2.

Therefore, if the cutout angle of the cutout piece 13a is set substantially in the tangential direction, the diameter of the collar 11A becomes gradually smaller, so that the winding can be transferred smoothly.

On the other hand, since the middle divided coil Lb is wound in the opposite direction to the divided coils I and a, the direction of the notch 12B formed in the flange 11B for the section of the winding block B corresponding to the divided coil Lb is , which is the opposite of the notch 12A formed in block A.

Further, a terminal plate mounting recess 14 for connecting a diode is formed between blocks A and B.

In the illustrated example, a flange 15 is formed, and a mounting recess 14 is formed at a predetermined position between this flange 15 and the side walls of the adjacent flange 11Ao, 11Bo, as shown in FIG. A terminal plate 16 like this is fitted and fixed.

However, the terminal plate 16 is not shown in FIG.

In FIG. 4, the terminal plate 16A is for connecting the winding end of the split coil I,a and the anode of the diode Da, and the terminal board 16B is for connecting the winding end of the split coil Lb and the anode of the diode Db. It is for.

Similar mounting recesses 14 are formed between blocks B and C and on each side wall of blocks A and C, into which terminal plates 16 are fitted and fixed.

By the way, the divided coils La, Lb, LC and the divided coil L
Since the winding is opposite to that of block b, it is necessary to reverse the winding direction when the winding is transferred from block A to B and when the winding is transferred from block B to C.

However, conventionally, in a winding bobbin in which the winding wire is divided into blocks and reversely wound, a boss is provided at the winding division part of the bobbin, and after winding the winding wire on one block,
This boss is caught by the rotational movement of the guide device of the winding machine,
The other block was reversely wound, but this conventional technique had the disadvantage that the structure and operation of the winding machine were complicated and the winding could not be done quickly. In the provided bobbin, a notch is formed in the collar located between the blocks, and if the bobbin is reversed with the winding wire hooked to this notch, the winding will be reversely wound on the other block. However, when the winding is hooked into the notch of the tsuba, the winding comes into contact with the outer periphery of the tsuba, so an outward force is applied to the winding due to the rotation of the bobbin, and as a result, the winding escapes outward. This has the disadvantage that it cannot be reliably hooked onto the notch.

Therefore, this invention provides a guide means that reliably guides the winding relative to the winding means and the reversing means so that the winding can be reliably wound between each winding block of the bobbin body and reverse winding can be performed. be.

An example of the structure of the winding guide means according to this invention will be explained below with reference to FIGS. 6 and 7.

The illustrated embodiment shows a winding section and a reversing section provided between block A and block B in FIG. 4, and first, the winding means 20 and its guide means 21 which constitute the winding section will be explained.

The winding means 20 is constructed by providing a notch in the intermediate collar 15AB located between the blocks A and B, and a winding section on the block A side facing the winding means, that is, the notch 20. Guide to XA 1000 steps 21
is provided.

This guide means 21 is located at the edge 20 of the notch 20 on the winding direction side.
a and the collar 11AO on the block A side are connected by a guide piece that diagonally crosses section XA in the winding direction.

Next, the reversing means 22 and its guide means 23 for controlling the winding reversal section will be explained. The diameter of the tip of the upper piece 22a forming the reversing means, ie, the notch 22, is slightly larger than the outer diameter of the flange 11BO.

On the other hand, the guide means 23 is provided in the winding section XB on the block B side, facing the notch 22, and the guide means 23 extends from the bottom surface of the section XB along the inner edge 22b of the notch 22 in the winding direction. It is constructed by an inclined guide surface.

Further, this guide means, that is, the guide surface 23 is sloped low toward the notch 22 side, and furthermore, its outer edge 23a is also connected to the intermediate flange 15A.
B and the collar 11BO are continuous at an angle in the winding direction.

Note that the guide means 21 and 23 may have the same structure.

That is, both guide means 21 and 23 may be formed by a guide piece that crosses the winding section, or may be formed by a guide surface raised on the bottom surface of the winding section, in short, the winding is connected to the bobbin body. The winding means 20 and the guide means may be arranged so that the winding wire can be smoothly wound around the adjacent section by the rotation of the wire winding means 20 and the winding means 20 and the guiding means. 21
, a reversing means 22 and a guide stage 21 are provided, but since the winding direction is reversed, the structure or the structure is the same except that the winding direction is reversed, so a description thereof will be omitted.

According to the above configuration, the winding that is wound from the block A to the winding section XA by the rotation of the bobbin body 1 is guided by the guide piece 21, which is a guide means, to the notch 20, which is a winding means, provided in the intermediate collar 15AB. Section X
B is wound around section XB, and in the winding of this section 22 to the first section of block B (6th section)
If the rotation direction of the bobbin body 1 is reversed from the double dotted line b' in the figure, the winding will be hooked to the inner end of the notch 22 (solid line b in Figure 6), and by continuing to rotate the bobbin body 1 in this direction, The windings are wound in the block B in the opposite direction.

Further, since the same applies when passing the winding from block B to block C, continuous automatic winding of the winding on the bobbin body 1 can be achieved.

As explained above, according to this invention, in a winding bobbin in which the winding part of the winding wire is divided into a plurality of parts by the collar, the winding means and the reversing means provided on the collar located at the winding transfer part are provided. Since a guide means is formed in the winding section of the previous stage, the winding can be reliably fed to the winding means etc.
Winding can be smoothly and reliably transferred to the next winding section, and since the winding is always caught by the reversing means when changing the winding direction, there is no malfunction when reversing the winding. .

Therefore, according to this invention, it is possible to easily achieve automatic winding of a winding that has reverse winding, such as the above-mentioned high voltage winding.

Although the above-mentioned embodiment is an example in which this invention is applied to a high-voltage winding bobbin of a flyback transformer, it is of course applicable to other winding bobbins.

[Brief explanation of the drawing]

Fig. 1 is a composition diagram of an example of a flyback transformer with split winding, Fig. 2 is its electrical connection diagram, Fig. 3 is an explanatory diagram of an automatic winding device, and Fig. 4 is an example of a bobbin based on this invention. 5 is a plan view thereof, FIG. 6 is an explanatory view of the main part, and FIG. 7 is a perspective view of the main part. In the diagram, 1 is the bobbin body, 10 is the bobbin, 11 A, 11
B, 11 C is the tsuba, 12 A, 12 B, 12 C is the notch, 15AB, 15BC is the intermediate tsuba, 20 is the winding means, 22 is the reversing means, 21.23 is the guiding means, A, B, C
is a winding block, and XA, XB, and XC are winding and winding sections.

Claims (1)

[Scope of utility model registration request] The bobbin body on which the winding wire is to be wound is divided into multiple sections by a plurality of collars, and several of these divided sections are grouped together to form a plurality of winding blocks. In the winding bobbin of a flyback transformer in which the winding direction of the wire is reversed and the winding blocks are connected in series with rectifier diodes, the section between the adjacent winding blocks is where the coil is wound. This section has an empty section with no winding, and one collar of this section has a notch for the end of the winding to cross over to the next section, and the other collar of the section is wound from the edge of this cut arrow part with a guide piece. A bobbin for winding, which is provided with a guide means connected obliquely in the wire direction, and the guide means guides the winding wire to an adjacent section.