JPH06141196A - Deflecting yoke - Google Patents

Abstract

PURPOSE:To simplify the disposal and the connection work of terminal lines of leakage magnetic field reducing coils by continuously winding a third coil and at least either of first and second coils. CONSTITUTION:With respect to a deflecting yoke, the third coil and at least either of first and second coils are continuously wound. That is, a horizontal deflecting coil 3-1 and a leaked magnetic field reducing coil 5-1 are continuously wound, and a winding end line 9-1 of the horizontal deflecting coil 3-1 becomes the winding start line of the leaked magnetic field reducing coil 5-1. In the same manner, a winding end line 9-2 of a horizontal deflecting coil 3-2 is not broken halfway and is the winding start line of a leaked magnetic field reducing coil 5-2. Since leakage magnetic field reducing coils 5-1 and 5-2 and horizontal deflecting coils 3-1 and 3-2 are continuously wound in this manner, the work to connect horizontal deflecting coils 3-1 and 3-2 to leakage magnetic field reducing coils 5-1 and 5-2 is omitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke, and more particularly to a deflection yoke characterized by its winding structure.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIG. Figure 4
FIG. 3 is a configuration diagram in which a deflection yoke 2 is attached to a cathode ray tube (CPT) 1. The deflection yoke is wound in an insulating frame 6, and has a pair of saddle-shaped horizontal deflection coils (first coils) 3 for deflecting the beam in the horizontal direction and a pair of saddle-shaped vertical deflection coils for deflecting the beam in the vertical direction. It is composed of a coil (second coil) 4.

In recent years, it has become important to reduce the magnetic field generated by a deflection yoke, especially a horizontal deflection coil. Generally, as shown in Japanese Patent Laid-Open No. 4-98739, a horizontal deflection leakage magnetic field is used. In order to reduce the above, leakage magnetic field reducing coils (third coils) 5-1 and 5-2 are provided on the CPT screen side (opening side) of the horizontal deflection coil 3.

[0004]

In the conventional device, the horizontal deflection coils 3-1 and 3-2 and the leakage magnetic field reduction coils 5-1 and 5-2 are connected as shown in FIG. Four terminals from T1 to T4 are required.
That is, the four winding terminal wires of the horizontal deflection coils 3-1 and 3-2 and the winding terminal wires 4 of the leakage magnetic field reducing coils 5-1 and 5-2.
This requires the peeling of the coating film of a total of eight electric wires and the soldering at four places, resulting in a large number of man-hours.

It is an object of the present invention to provide a deflection yoke capable of simplifying the processing and connection work of the terminal wire of the leakage magnetic field reducing coil which the prior art has.

[0006]

SUMMARY OF THE INVENTION The above-mentioned object is to deflect a first coil for deflecting an electron beam and a second coil for deflecting an electron beam in a direction perpendicular to the deflection direction. In a deflection yoke having a third coil provided, the third coil and the first coil or the second coil
It is achieved by continuously winding at least one of the coils.

[0007]

In the present invention, the work of connecting the horizontal deflection coil and the leakage magnetic field reduction coil can be omitted by continuously winding the leakage magnetic field reduction coil and the horizontal deflection coil.

[0008]

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

FIG. 1 schematically shows horizontal deflection coils 3-1 and 3-2 which are first coils and leakage magnetic field reduction coils 5-1 and 5-2 which are third coils. .

As can be seen, the horizontal deflection coil 3-
1 and the leakage magnetic field reduction coil 5-1 are continuously wound, and the winding end line 9-1 of the horizontal deflection coil 3-1 is the winding start line of the leakage magnetic field reduction coil 5-1. Similarly, the winding end line 9-2 of the horizontal deflection coil 3-2 is a winding start line of the leakage magnetic field reducing coil 5-2 without being cut in the middle.

Therefore, the terminal wire as a whole is composed of the winding start side 7-1 of the horizontal deflection coil 3-1, the winding start side 7-2 of the horizontal deflection coil 3-2, and the leakage magnetic field reduction coil 5-1. There are only four in total, 8-1 on the winding end side and 8-2 on the winding end side of the leakage magnetic field reducing coil 5-2.

FIG. 3 is a connection diagram of the horizontal deflection coils 3-1 and 3-2 and the leakage magnetic field reduction coils 5-1 and 5-2.

As shown in the figure, terminal lines 7-1 and 7-2 are connected to a terminal T2, and terminal lines 8-1 and 8--.
Since 2 is connected to the terminal T1, the number of terminals is T
There are only two, 1 and T2.

That is, the horizontal deflection coils 3-connected in series
1 and a leakage magnetic field reduction coil 5-1 and a horizontal deflection coil 3-2 and a leakage magnetic field reduction coil 5-2, which are also connected in series, constitute a parallel circuit.

FIG. 2 shows an example of a bobbin for winding the horizontal deflection coil 3 and the leakage magnetic field reduction coils 5-1 and 5-2. The insulating frame 6 for winding the horizontal deflection coil 3 and the leakage magnetic field reduction are shown. Bobbin section 6 for winding the coils 5-1 and 5-2
1, 6-2 are integrated.

[0016]

As described above, in the case of the present invention, the number of terminal wires of the horizontal deflection coil and the leakage magnetic field reduction coil is four, and the number of soldered portions is two. That is, it is half that of the conventional example, and the number of steps can be significantly reduced.

Although the leakage magnetic field reducing coil has been targeted as the third coil in the above, it is clear that the equivalent effect can be obtained by targeting the sub-deflection coil or the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a horizontal deflection coil and a leakage magnetic field reduction coil of a deflection yoke according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of a bobbin used in the deflection yoke of the present invention, in which a horizontal deflection coil bobbin winding the first coil and a leakage magnetic field reducing coil bobbin winding the third coil are integrated. .

FIG. 3 is a connection diagram of a horizontal deflection coil and a leakage magnetic field reduction coil.

FIG. 4 is a schematic structural diagram of a deflection yoke.

FIG. 5 is a connection diagram of a horizontal deflection coil and a leakage magnetic field reduction coil in a conventional example.

[Explanation of symbols]

 1 Braun tube (CPT) 2 Deflection yoke 3 Horizontal deflection coil (first coil) 4 Vertical deflection coil (second coil) 5 Leakage magnetic field reduction coil (third coil) 6 Insulation frame 6-1, 6-2 Bobbin Part 7-1, 7-2, 8-1, 8-2 Terminal line T1, T2 terminal

Claims (1)

[Claims] 1. A first coil for deflecting an electron beam,
In a deflection yoke having a second coil for deflecting an electron beam in a direction perpendicular to the deflection direction and a third coil provided for the purpose of deflection or another purpose, a third coil,
A deflection yoke, wherein at least one of the first coil and the second coil is continuously wound.