JPH07220656A - Deflection coil - Google Patents

Abstract

PURPOSE:To provide a deflection coil by which deformation such as a twist is hardly caused by forming a saddle-shaped deflection coil by winding left screw-shaped stranded wires and right-handed stranded wires together in parallel to each other. CONSTITUTION:A saddle-shaped horizontal deflection coil 2 is formed by winding left-handed stranded litz wires 5 and right-handed stranded litz wires 6 together plural times in a saddle shape. Thereby, since stress to twist to the left by the left-handed stranded litz wires and stress to twist to the right by the right- handed stranded litz wires cancel each other, the horizontal deflection coil 2 does not twist to the right or the left by age, and can be almost held in that condition as is, so that it can be suitably used for a deflection yoke of a television set or a display device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection coil arranged in a deflection yoke of a television receiver or a display device.

[0002]

2. Description of the Related Art FIG. 4 shows a schematic structure of a general deflection yoke used in a television receiver or a display device as viewed from the head 4 side. In this type of deflection yoke, a pair of saddle-shaped horizontal deflection coils 2 are mounted on the top side and the bottom side along the inner peripheral surface of the bobbin 1 extending from the head 4 side to the neck 3 side. A vertical deflection coil and a core (not shown) are mounted on the outer peripheral surface side.

Horizontal deflection coil 2 mounted on bobbin 1
Is a saddle type in which a plurality of coil windings of a left-handed twisted litz wire 5, which is a left-handed twisted wire obtained by twisting a thin wire 10 into a left-handed thread, is arranged in parallel as shown in FIG. It is wound around a die and, for example, as shown in FIG. 5B (the die is not shown), is deflected from the side of the neck mounting portion (neck side crossover portion) 13 side mounted on the neck 3 side of the deflection yoke. The coil is formed into a saddle shape while forming the head mounting portion (head side connecting wire portion) 12 side mounted on the head portion 4 side of the yoke and the distribution portion therebetween, and the die is formed after the winding is completed. Then, it is manufactured as a saddle-shaped coil.

[0004]

However, like the left-hand twisted litz wire 5 as shown in FIG. 5 (a),
The wires twisted in the same direction generate internal stress in the twisted wire itself. For example, if the left-handed twisted litz wire 5 is taken out for about 1 m and placed on a table, etc. Even if no external force is applied to 5, the left-handed twisted litz wire 5 does not become linear on the table, and a waviness occurs. Therefore, in order to manufacture the saddle-shaped horizontal deflection coil 2, as shown in FIG. 5B, when the saddle-shaped coil is wound using the left-handed twisted litz wire 5, points A and In B, a stress that tends to twist in the direction of the arrow (left direction) is generated.

Therefore, when a plurality of left-handed twisted litz wires 5 are wound together in a saddle shape as shown in FIG. 5B to form a saddle-shaped horizontal deflection coil 2, When the horizontal deflection coil 2 is twisted by the internal stress of the left-handed twisted litz wire 5, the horizontal deflection coil 2 is twisted to the left as shown in FIG. Since the degree of twisting of the horizontal deflection coil 2 is not constant, the position of the coil winding of the horizontal deflection coil 2 also changes, and the temporal change of the horizontal deflection coil 2 changes the generation state of the magnetic field generated by the horizontal deflection coil 2. There is a problem that a color shift occurs on the screen of the cathode ray tube (CRT).

Further, such a problem also occurs when a plurality of right-handed twisted litz wires 6 functioning as right-handed twisted wires as shown in FIG. 3A are wound together. Three
Since a twisted state as shown in (b) of (is twisted to the right in this case), the same problem occurs.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to change the position of the coil winding by changing with time such as torsional deformation of a deflection coil such as a horizontal deflection coil. It is an object of the present invention to provide a deflection coil capable of preventing color misregistration of an image of a John receiver or the like.

[0008]

In order to achieve the above object, the present invention is constructed as follows. That is, the present invention provides a saddle type deflection coil disposed in a deflection yoke, wherein the deflection coil is formed by winding a left-handed twisted wire and a right-handed twisted wire together in parallel. It is characterized by being present.

[0009]

In the present invention having the above structure, the deflection coil is formed by winding the left-handed twisted wire and the right-handed twisted wire together in parallel, so that the left-handed twisted wire is used. The internal stress of the left twist acting on the coil and the internal stress of the right twist acting on the coil due to the right-handed twisted wire cancel each other out, and the force to deform the coil is almost cancelled, so that the deflection coil is not deformed. It almost never happens.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In the description of the present embodiment, the same reference numerals will be given to the same names as those in the conventional example, and the detailed description thereof will be omitted.
FIG. 1 shows an embodiment of the deflection coil according to the present invention. This deflection coil is a horizontal deflection coil 2. The horizontal deflection coil 2 of this embodiment is different from the conventional example in that the horizontal deflection coil 2 of this embodiment has a left-hand twisted litz wire 5 and a right-hand twisted litz. It is formed by winding the wire 6 together and winding it in parallel. That is, in the horizontal deflection coil 2 of this embodiment, as shown in FIG. 2A, a left-handed twisted litz wire 5 and a right-handed twisted litz wire 6 are combined, and the wire is shown in FIG. 2B. As shown in, it is formed by winding a saddle shape a plurality of times.

This embodiment is constructed as described above,
If the horizontal deflection coil 2 is formed by winding a plurality of left-handed twisted litz wires 5 together as in the conventional example, as shown in FIG. When the horizontal deflection coil 2 tends to be twisted to the left side, and conversely, when the horizontal deflection coil 2 is formed by winding a plurality of right-handed twisted litz wires 6 together, the right-handed twisted wire is conversely twisted. Due to the internal stress of the litz wire 6, the horizontal deflection coil 2 tends to be twisted to the right as shown in FIG. 3B, but as in this embodiment, the horizontal deflection coil 2 is left-handed twisted litz wire. 5 and the right-handed twisted litz wire 6 are wound together, the stress of twisting leftward by the left-handed twisted litz wire 5 and twisting rightward by the right-handed twisted litz wire 6 And the stress that , It is prevented from the horizontal deflection coil 2 to be twisted to the right or left side of FIG over time, and that the same state as when produced also the horizontal deflection coil 2 over time is maintained. Then, the shape of the horizontal deflection coil 2 and the position of the coil winding are substantially maintained as they were at the time of design.

According to this embodiment, as described above, the shape of the horizontal deflection coil 2 and the position of the coil winding are maintained over time. The occurrence of the magnetic field of the horizontal deflection coil 2 is changed due to the change of the position of the line and the like, and the color shift does not occur in the cathode ray tube (CRT). It becomes possible to keep.

The present invention is not limited to the above-mentioned embodiment, and various embodiments can be adopted. For example, in the above-mentioned embodiment, as shown in FIG. 2B, one left-hand twisted litz wire 5 and one right-hand twisted litz wire 6 are combined together and wound in parallel a plurality of times. Although the horizontal deflection coil 2 is formed by the above, when the horizontal deflection coil 2 is formed, two or more left-hand twisted litz wires 5 and two or more right-hand twisted litz wires 6 are put together and wound in parallel a plurality of times. It may be formed by turning.

The number of thin wires 10 forming the left-handed twisted litz wire 5 and the right-handed twisted litz wire 6 is not particularly limited.

Further, in the above description, the horizontal deflection coil 2 has been described, but the deflection coil of the present invention is not necessarily the horizontal deflection coil 2, and the present invention is also applicable to a saddle type vertical deflection coil. It is applied.

[0016]

According to the present invention, the deflection coil is formed by winding the left-handed twisted wire and the right-handed twisted wire together in parallel, and the inside of the left-handed twisted wire is formed. Since it is almost prevented that the stress and the internal stress due to the right-handed twisted wire cancel each other out and tend to twist the deflection coil, as in the conventional case, the deflection coil is twisted over time or its twisting condition is increased. Is not constant and the position of the coil winding changes from that at the time of design, which prevents the occurrence of color misregistration in the image on the television receiver or display device, and designs the image on the television receiver, etc. It is possible to maintain a state where there is no color shift as it is. Therefore, a user of the television receiver or the display device can always comfortably use the television receiver and the like without experiencing discomfort due to color shift of the image.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a deflection coil according to the present invention.

FIG. 2 is an explanatory diagram showing a method of manufacturing the horizontal deflection coil 2 of the present embodiment.

FIG. 3 is an explanatory diagram showing a right-handed twisted litz wire 6 and a horizontal deflection coil 2 formed by the right-handed twisted litz wire 6.

FIG. 4 is an explanatory diagram showing a deflection yoke including a saddle-shaped horizontal deflection coil 2.

FIG. 5 is an explanatory diagram showing a method of manufacturing a conventional horizontal deflection coil 2.

[Explanation of symbols]

 2 Horizontal deflection coil 5 Left-hand twisted litz wire 6 Right-hand twisted litz wire 12 Head mounting part 13 Neck mounting part

Claims (1)

[Claims] 1. A saddle type deflection coil disposed on a deflection yoke, wherein the deflection coil is formed by winding a left-handed twisted wire and a right-handed twisted wire together in parallel. A deflection coil characterized in that