JPH0389434A - Deflection yoke - Google Patents

Abstract

PURPOSE:To prevent the occurrence of ringing in a deflection yoke by providing gaps with preset sizes between three coils wound with a continuous copper wire. CONSTITUTION:A deflection yoke is formed with three continuous coils 11, 12 and 13. Gaps between coils are set to (a) at an opening section 15 and (b) at a neck section 16. Gaps (a) and (b) are made the same distance or above as the vertical size M of the cross section area of coils 11, 12 and 10. The capacity increase by the lamination of coils is prevented, thus the capacity becomes capacities of coils 11, 12 and 13 themselves. The ringing caused by the capacity generated between coils is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a deflection yoke used in a television receiver [1].

2. Description of the Related Art Below, a deflection coil in a conventional deflection yoke will be described with reference to the drawings.

Figure 6 shows a continuous copper wire wound in three parts: large, medium,
This shows the winding order of a small coil.

In FIG. 6, from winding start position A, as shown by the arrow, the small coil 1 is wound, then the medium coil 2 is wound, and then the large coil 3 is wound, and the winding ends at position B. It has reached this point.

FIG. 7 is a side view of a deflection coil in a conventional deflection yoke, FIG. 8 is a sectional view taken along line cc' in FIG. 7, showing the opening of the coil, and FIG. -D' sectional view showing the neck portion of the coil. Furthermore, the 10th
The figure is a bottom view of the deflection coil in a conventional deflection yoke, and FIG. 11 is a sectional view taken along the line EE' in FIG. 10.

7th Uf! In FIG. 11, the conventional deflection coil 4
In this case, a small coil 1, a medium coil 2, and a large coil 3 are provided which are wound in three parts with continuous copper wire in the winding order shown in FIG. In particular, the small coil 1, medium coil 2 and large coil 3 are layered and rolled without any gaps. Further, in FIG. 11, 7 indicates the laminated portion at the neck portion 6 of each of the small, medium, and large coils 1°2.3, and 8 indicates the laminated portion at the opening 5 of each coil 1.2.3.
Further, F is the vertical dimension of the cross-sectional area of the laminated portion 7, and G is the vertical dimension of the cross-sectional area of the laminated portion 8.
It shows the vertical dimension of the cross-sectional area of .

Problems to be Solved by the Invention However, in the conventional deflection yoke described above, charges are stored in the capacitance C generated between the small, medium, and large coils 1, 2, and 3 due to the electromotive force caused by the horizontal magnetic flux during horizontal scanning. This causes a problem in that current flows through the vertical coil, causing ringing.

The present invention solves the above conventional problems, and provides a deflection yoke that eliminates ringing by reducing the capacitance generated between small, medium, and large coils wound in three parts. The purpose is to

Means for Solving the Problems In order to solve the above-mentioned problems, the deflection yoke of the present invention has a large, medium, and small coil wound with continuous copper wire divided into three parts. This device includes a deflection coil that is wound with a gap equal to or larger than the vertical dimension of the cross-sectional area of the coil.

Effect With the above configuration, a gap equal to or larger than the vertical dimension of the cross-sectional area of the coils is provided between the large, medium, and small coils at the necks and openings, so that the large, medium, and This makes it possible to prevent an increase in capacitance in the laminated portion of small coils, and to prevent ringing from occurring.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of a deflection coil in a deflection yoke according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line H-H' in FIG. The figure is a sectional view taken along line II' in FIG. 1 and shows the neck portion of the deflection coil. 4 is a bottom view of the deflection coil in the same deflection yoke, and FIG. 5 is a sectional view taken along the line JJ' in FIG. 4.

In FIG. 1, at the winding start position, the small coil 11 is wound in the direction of the arrow, then the medium coil 12 is wound, and then the large coil 13 is wound, until the winding end position is reached. A deflection coil 14 is wound. At this time, use 3 continuous copper wires.
Opening 1 of each coil 11, 12, 13 that is divided and wound
5 and neck part 16, between the coils of FIGS. 2 and 3.
Wind the wires with gaps a and b as shown in the figure.

Further, as shown in FIG. 5, the gaps a and b are set at a distance equal to or greater than the vertical dimension M of the cross-sectional area of each coil 11.12 degrees 13.

The operation of the deflection coil configured as described above will be described below.

In FIG. 1, a small coil 11, a medium coil 12, and a large coil 13 are wound with continuous copper wire divided into three parts.
As shown in FIGS. 2 and 3, a small coil 11 and a medium coil 12
If a gap a at the opening 15 and a gap b at the neck 16 are provided between the medium coil 12 and the large coil 13, the capacitive coupling between the coils 11 and 12.13 is eliminated, and the small coil 11. Medium coil 12
And the capacity can be set only to the large coil 13 itself.

Here, the capacitance of the conventional deflection coil and the deflection coil of the present invention are compared.0 The capacitance of the deflection coil of the present invention is CA, and the capacitance of the conventional deflection coil is C1. The capacitance C is calculated from the general formula as follows.

Capacitance CAC1=ε of the deflection coil of the present invention and the conventional deflection coil. +, and taking this difference, cs-cA=ε. S(+ + 〉 r = ε0 KO'West Exit]]->O Therefore, Cs > CA Therefore, if a gap is taken, the capacitance between the coils will decrease.From this, the opening and neck of the coil By leaving a gap between the coils in the laminated portion of large, medium, and small coils, it is possible to prevent an increase in capacity due to lamination.

Furthermore, when a ringing phenomenon occurs, if the current l flowing through the coil is the transient current of the LC circuit, then the transient current 1 is calculated from this formula.The smaller the capacitance C, the more the ringing can be prevented It turns out that you can do it.

Effects of the Invention As described above, according to the present invention, continuous copper wire is wound in three parts, with a gap between the small coil, medium coil, and large coil at the neck and opening. Accordingly, it is possible to realize a deflection yoke that can reduce the capacitance between each coil and prevent ringing from occurring.

[Brief explanation of drawings]

FIG. 1 is a side view of a deflection coil in a deflection yoke showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line H-H' in FIG.
3 is a sectional view taken along line II' in FIG. 1, FIG. 4 is a bottom view of the deflection coil in the same deflection yoke, and FIG.
J' sectional view, Figure 6 is a diagram showing the winding order of each coil in which continuous copper wire is wound in three parts, Figure 7 is a side view of the deflection coil in a conventional deflection yoke, and Figure 8 is Fig. 7 is a sectional view taken along line CC'; Fig. 9 is a sectional view taken along line DD' in Fig. 7;
Figure 0 is a bottom view of the deflection coil in the same deflection yoke.
FIG. 1 is a sectional view taken along the line EE' in FIG. 10. 11...Small coil, 12...Medium coil, 13...
Large coil, 14... Deflection coil, 15... Opening,
16...Neck part, a. b...gap, M...vertical dimension of the cross-sectional area of the coil.

Claims (1)

[Claims] 1. Large, medium, and small coils are wound with continuous copper wire divided into three parts, with a gap equal to or larger than the vertical dimension of the cross-sectional area of the coil between the coils at the neck and opening. Deflection yoke with deflection coil.