JPS6366830A - Deflecting yoke - Google Patents

Abstract

PURPOSE:To reduce the dispersion of a coil by providing coil grooves on the inner peripheral section of a horn-shaped reel, providing slants on bottom sections of the coil grooves, and alignment-winding the coil for each winding from the low section toward the high section. CONSTITUTION:Bottom sections of coil grooves 2 on the inner peripheral section side of a horn-shaped reel 1 are inclined, a coil lead wire 3 is alignment-wound for each winding from the low section side toward the high section in the coil grooves 2. That is, if an appropriate tensile force is applied to the wire during winding, the wire flows (slides) to the low section on the bottom of the groove in sequence in the same coil layer even with no wire feeding (traverse) for each winding for the coil in the same groove, thus no gap is generated between wires, and crossing of wires can be avoided. Accordingly, the winding condition of a deflecting coil is nearly aligned and stabilized, the magnetic field distribution is stabilized, and a deflecting yoke can be made highly precise.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a deflection yoke for a picture tube used in a display or the like.

2. Description of the Related Art Recent years 1 CRT displays used as computer terminal equipment have become increasingly high-definition, and there has been a strong demand for higher precision for deflection yokes used in CRTs. One method for improving the accuracy of the deflection yoke is to use a so-called stator-wound deflection coil, which is wound around a bobbin having a plurality of winding grooves.

A conventional deflection yoke will be explained below with reference to one drawing.

FIG. 3 is a perspective view of a winding frame for stator windings.

In FIG. 3, 111 is a winding groove in which the copper wire is wound.

Figures 4a to 4c show the winding state when a litz wire is used.

In FIGS. 4a-yc, reference numeral 11 indicates the first turn of the copper wire in the winding groove 112, and reference numeral 13 indicates the second turn of the copper wire 114, the third turn of the copper wire.

As shown in FIG. 4B, the first winding of the copper wire 12 is located at the bottom of the winding groove 11 with less regulation of the winding position. Figure 4 shows the second and third rolls of copper wire, and there may be a space between the first roll of copper wire 12 and the second roll of copper wire 13. , when winding the third winding of the copper wire 14, the third winding of the copper wire 14 is wound obliquely in space with the first winding of the copper wire 12 and the second winding of the copper wire 13. There is a possibility that
Figure C shows a state in which the winding is repeated as described above, and there is no regularity in the winding.

The problem that the invention seeks to solve There is a large variation in the winding condition as shown above.

The magnetic field characteristics were not stable and it was not suitable for high precision applications.

In view of the above-mentioned problems, the present invention provides a highly accurate deflection yoke that can reduce variations in windings at the ends.

Means for Solving the Problem In order to achieve this object, the deflection yoke of the present invention is such that the bottom of the winding groove is sloped, and each winding is wound in alignment from the lowland area to the highland area. It is.

Effect: With this configuration, if a suitable tension is applied to the wire during winding, each wire will be sent in sequence within the same winding station without having to traverse each winding for each winding in the same groove. Because it flows (slides) to the low part of the bottom of the groove, there are no gaps between lines, and it is possible to avoid lines crossing each other.

EXAMPLE Hereinafter, an example of the present invention will be explained using the drawings of FIGS. 1 and 2.

FIG. 1 shows an example of the present invention in which a horizontal (or vertical) winding is wound around a winding frame, and FIG. 2 shows an enlarged view of the main parts thereof.

As shown in FIGS. 1 and 2, the winding groove 2 on the inner circumferential side of the ratchet-shaped winding frame 1 has an inclined bottom. In this case, the coil conductor 3 is wound in an array from the lowland side toward the highland area, one winding at a time.

As described above, the well-aligned windings stabilize the magnetic field distribution of the deflection coil, improving the accuracy of one deflection yoke and making it stable.

Effects of the Invention As described above, the present invention has a structure in which the bottom of each winding groove is sloped and each winding is wound in an aligned manner from a lowland area to a highland area, so that the winding state of one deflection coil is almost aligned. It becomes stable, the magnetic field distribution is stabilized, and the deflection yoke can be made with high precision, which has significant practical effects.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the main parts of a deflection yoke according to an embodiment of the present invention. Fig. 2 is an enlarged view of section A in Fig. 1. Fig. 3 is a perspective view of the winding frame used in the deflection yoke. Figures a-yc are explanatory diagrams showing conventional winding states. 1... Winding frame, 2... Winding groove, 3...
...Coil conductor. Name of agent: Patent attorney Toshio Nakao and 1 other list
1 Figure 5PIz diagram?

Claims (1)

[Claims] It is characterized by having a winding groove on the inner periphery of the trumpet-shaped winding frame, and having a slope at the bottom of the winding groove, and winding each winding in an aligned manner from a lowland area to a highland area. deflection yoke.