JPH1186728A - Winding die for deflection yoke - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a deflection yoke winding die which is capable of easily manufacturing a saddle-shaped deflection coil having a desired winding distribution. SOLUTION: This deflection yoke winding die has a saddle-shaped male die 5 and a curved face 6 along a curved face 4 of this male die 5, and this curved face 6 has a female die 7 disposed so as to face opposite the curved face 4 of the male die 5 and an engaging means 8 for restrict the relative position between the male die 5 and the female die 7, so that a given gap is formed between the curved faces of both of the male and female dies. In this case, a part of the curved face of the female die 7 or male die 5 has a curved face matching a part of the curved face of the male die 5 or the female die 7, and a protrusion part 20 for restricting the position of winding to be wound in the gap between the curved face 4 of the male die 5 and the curved face 6 of the female die 7 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke winding form used for manufacturing a deflection yoke mounted on a cathode ray tube such as a picture tube or a display tube.

[0002]

2. Description of the Related Art Generally, a cathode ray tube such as a picture tube or a display tube is provided with a deflection yoke for deflecting an electron beam emitted from an electron gun from the neck of a funnel-shaped funnel to the outside of a large diameter portion.

The deflection yoke has a horizontal deflection coil for generating a magnetic field for deflecting the electron beam in the horizontal direction, a vertical deflection coil for generating a magnetic field for deflecting the electron beam in the vertical direction, and a magnetic core. As shown in FIG. 3, at least one of the horizontal and vertical deflection coils has a parallel wire portion 1 wound in a direction along the tube axis and a crossover wire portion 2a provided at both ends thereof.
, 2b.

Conventionally, as a method for manufacturing such a saddle type deflection coil, as shown in FIG. 4, a saddle-shaped male mold 5 having a curved surface 4 having a trumpet shape in half, and A female mold 7 having a curved surface 6 along the curved surface 4 and arranged so that the curved surface 6 faces the curved surface 4 of the male mold 5, and a predetermined gap between the curved surfaces 4 and 6 of the male and female molds 5 and 7. The male mold 5 and the female mold 7 are engaged with each other so that
A deflection yoke winding die having an engaging means 8 for regulating the relative position of the pressing member 7 and a pressing means 14 for pressing and forming a winding wound between the curved surfaces 4 and 6 of the male and female dies 5 and 7 is used. There is a manufacturing method. The engaging means 8 is provided on the curved surface 4 of the male mold 5.
It comprises a protruding portion 10 protruding upward and a concave hole 11 provided in the curved surface 6 of the female mold 7 into which the tip of the protruding portion 10 fits.

In the manufacture of a deflection coil using this deflection yoke winding die, as shown in a cross section in FIG. 5, the tip of a projection 10 provided on a male die 5 is provided with a concave hole 11 provided on a female die 7. And the male mold 5 and the female mold 7 are combined, and the self-fusing electric wire 13 is wound into the gap formed between the curved surfaces 4 and 6 of the male and female molds 5 and 7. An electric current is applied to the fusion electric wire 13 to generate heat, and a thermosetting resin (a polyamide resin, an epoxy resin or the like) or a thermoplastic resin constituting the outermost layer of the self-fusion electric wire 13 is melted. Thereafter, the pressing is performed by pressing means 14.

When a saddle-type deflection coil is manufactured by the above-described winding method, as shown in FIG. 6, the deflection coil 15 has a surface 16 regulated by a male curved surface and a surface 17 regulated by a female curved surface. The surface 18 regulated by the side surface of the projection of the engagement means and the surface 17 formed by the pressing means,
The shape is determined.

[0007]

As described above, as a method of manufacturing a saddle-type deflection coil, a saddle-shaped male mold having a curved surface with a trumpet shape halved, and a curved surface along this male-molded curved surface are used. A female yoke having a female yoke and a deflection yoke winding die having an engagement means for regulating the relative positions of the male and female dies are used to regulate the shape by the curved surfaces of the male and female dies and the side surfaces of the projections of the engagement means. There is a manufacturing method.

In order to manufacture a deflection coil in which the windings are distributed in the vicinity of the horizontal axis as shown in FIG. 7, for example, as shown in FIG. W needs to be widened.

However, when the width W of the protrusion 10 is increased, the distance D between the side surface of the male mold 5 and the side surface of the protrusion 10 is reduced,
In addition, the angle θ between the curved surface 4 of the male mold 5 and the side surface of the projection 10 becomes acute, and it is difficult to manufacture the male mold 5 with high accuracy.
It becomes difficult to manufacture a saddle type deflection coil having a desired winding distribution.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a deflection yoke winding form capable of easily manufacturing a saddle type deflection coil having a desired winding distribution. Aim.

[0011]

Means for Solving the Problems A saddle-shaped male mold having a curved surface with a trumpet shape halved, and a curved surface along the curved surface of the male mold, the curved surface facing the male curved surface. A female mold arranged on the deflecting yoke winding form having engaging means for regulating a relative position between the male mold and the female mold so that a predetermined gap is formed between the curved surfaces of the male and female molds. A part of the female or male curved surface has a curved surface that coincides with a part of the male or female curved surface, and the position of the winding wound around the gap between the male and female curved surfaces is regulated. A protruding portion was formed.

Further, an engaging means is provided on a part of the projecting portion.

[0013]

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

FIG. 1 shows a deflection yoke winding form used for manufacturing a saddle type deflection coil which is one embodiment of the present invention. The deflection yoke winding form has a saddle-shaped male mold 5 having a curved surface 4 having a trumpet shape in half, and a curved surface 6 along the curved surface 4 of the male mold 5.
A predetermined gap is formed between the female mold 7 disposed so that the curved surface 6 faces the curved surface 4 of the male mold 5 and the curved surfaces 4 and 6 of the male and female molds 5 and 7. Engaging means 8 for engaging the male mold 5 and the female mold 7 to regulate the relative positions of the male and female molds 5 and 7, and the gap between the curved surfaces 4 and 6 of the male and female molds 5 and 7. And a pressing means 14 for pressing and forming the winding wound around the sheet. The engaging means 8 includes a projection 10 projecting on the curved surface 4 of the male mold 5 and a concave hole 11 provided in the female mold 7 into which the tip of the projection 10 is fitted.

Further, in this embodiment, a projection 20 protruding from the curved surface of the female mold 7 is provided on a part of the curved surface 6 of the female mold 7 so as to face the projection 10 provided on the male mold 5. ing. A curved surface 4 of the male mold 5 is
And a flat surface 22 parallel to the distal end surface of the pressing means 14 is formed on both sides of the curved surface 21. When the tip of the projection 10 provided on the male mold 5 is fitted into the concave hole 11 of the female mold 7 and the male and female molds 5 and 7 are combined, the projection 20 has a curved surface. 21 is in close contact with the curved surface 4 of the male mold 5, and the flat surface 22 regulates the position of the winding wound in the gap formed by the curved surface 4 of the male mold 5 and the curved surface 6 of the female mold 7. .

In the manufacture of the deflection coil using the winding yoke for the deflection yoke, the distal end of the projection 10 provided on the male die 5 is fitted into the concave hole 11 of the female die 7, and the male die 5 and the female die 7 are formed. The self-fused electric wire 13 is wound into the gap formed between the curved surfaces 4 and 6 of the male and female dies 5 and 7, and a current is caused to flow through the self-fused electric wire 13 and heat is generated. Self-fusing electric wire 1
The thermosetting resin or the thermoplastic resin such as polyamide resin or epoxy resin constituting the outermost layer of No. 3 is melted. Thereafter, the pressing is performed by pressing means 14.

FIG. 2 shows a deflection coil manufactured by the above-mentioned winding form. The deflection coil 22 has a surface 23 regulated by a male curved surface and a surface 24 regulated by a female curved surface.
And a surface 25 regulated by a protrusion provided on the female mold
And the surface 26 regulated by the pressing means, the shape is determined, and as shown in the figure, a deflection coil having a large number of windings distributed near the horizontal axis (X axis) can be easily manufactured.

That is, when the winding form is configured as described above,
The width W of the projection 10 of the engaging means 8 for engaging the male and female dies 5, 7 is not increased as shown in FIG. Can be manufactured without narrowing, for example, a deflection coil in which the windings shown in FIG. 2 are distributed in the vicinity of the horizontal axis in a large number. A winding form can be easily manufactured.

In the above embodiment, the projection is provided on the female curved surface, but the projection may be provided on the male curved surface.

In the above-described embodiment, the engaging means for engaging the male and female molds is provided. However, as in the above-described winding form, the female curved surface is provided with a protruding portion which is in close contact with the male curved surface. With this projection, the gap between the curved surfaces of the male and female molds can be regulated, and the engaging means consisting of the projection shown in the above-mentioned former and the concave hole in which the tip of this projection fits is omitted. be able to.

In the above embodiment, a flat surface parallel to the tip surface of the pressing means is formed at the tip of the projecting portion projecting from the curved surface of the female mold. It need not be parallel.

Further, in the above embodiment, the engaging means is integrally provided on both the male and female molds. However, this engaging means is independent of the male and female molds from the viewpoint of the manufacturing accuracy and ease of manufacturing of the winding form. When the male mold and the female mold are combined, the structure may be appropriately fixed by a fixing means.

[0023]

As described above, when the protrusion for regulating the position of the winding wound in the gap between the male curved surface and the female curved surface is provided on a part of the female curved surface, the deflection yoke winding is provided. The mold can be easily manufactured without lowering the precision,
A saddle type deflection yoke having a desired winding distribution can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a view showing a configuration of a saddle type deflection yoke winding form according to an embodiment of the present invention.

FIG. 2 is a view showing a shape of a saddle-type deflection coil manufactured by the above-described winding die.

FIGS. 3A and 3B are diagrams showing a configuration of a saddle type deflection coil, respectively.

FIG. 4 is a view showing a configuration of a conventional winding form for a saddle type deflection yoke.

FIG. 5 is a view for explaining a method of manufacturing a deflection coil using a conventional saddle-type deflection yoke winding die.

FIG. 6 is a view for explaining the shape of a deflection coil manufactured by a conventional saddle-type deflection yoke winding form.

FIG. 7 is a view for explaining a problem of a conventional winding form for a saddle type deflection yoke.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 ... Curved surface 5 ... Male type 6 ... Curved surface 7 ... Female type 8 ... Engaging means 13 ... Self-fusing electric wire 20 ... Projection

Claims (2)

[Claims] 1. A saddle-shaped male mold having a curved surface with a trumpet shape halved, and a curved surface along the male curved surface,
The female mold is arranged such that this curved surface faces the curved surface of the male mold, and the relative positions of the male mold and the female mold are formed such that a predetermined gap is formed between the curved surfaces of the male and female molds. A deflecting yoke winding form having an engaging means for regulating, wherein the curved surface of the female mold or the male mold has a curved surface that coincides with a part of the curved surface of the male mold or the female mold; A winding yoke for a deflection yoke, wherein a projection for regulating a position of a winding wound in a gap between a curved surface of the die and a curved surface of the female die is formed. 2. The winding form for a deflection yoke according to claim 1, wherein an engagement means is provided on a part of the projecting portion.