JP2582726Y2 - Deflection yoke device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke device provided with a ringing removing coil.

[0002]

2. Description of the Related Art As is well known, a deflection yoke mounted on a cathode ray tube of a television receiver or a display device is provided with a horizontal deflection coil and a vertical deflection coil.
Recently, as television receivers and display devices have become larger and more precise, harmonics have been generated due to the effects of flyback transformers and other factors, and these harmonics have caused, for example, fringes on the screen of the cathode ray tube. A so-called ringing phenomenon in which a pattern is formed may occur, and a ringing removal coil as shown in FIG. 3 is connected to the horizontal deflection coil to remove the ringing phenomenon. In the figure, the ringing removing coil has a doughnut-shaped core 3 in which a covered lead wire 2 is bifilar wound (a winding method in which two covered lead wires are wound together).
Side), a deflection output current is input to the B side, and a deflection input current is input to the B side. The influence of the harmonics is eliminated by canceling the output side magnetic field and the input side magnetic field, and the ringing phenomenon is eliminated. Had been

[0003]

However, since the core 3 of the ringing removing coil 1 is formed in a donut-shaped cylindrical shape, it is necessary to manually wind the coated lead wire 2 on the core 3 by bifilar winding. I have to wind it. Therefore, there is a problem that the work efficiency of winding is low and the cost is high.

The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to form a ringing removing coil of a deflection yoke by manually winding a covered lead wire by hand. It is an object of the present invention to provide a deflection yoke device that can easily form a coil without using a coil.

[0005]

The present invention is configured as follows to achieve the above object. That is, the present invention provides a deflection yoke device in which a ringing removing coil is connected to a deflection coil, and a rod-shaped central magnetic leg and
Outer magnetic legs surrounding the central magnetic leg, and both ends of the central magnetic leg
The minutes are connected to the outer magnetic legs, respectively,
And the outer magnetic legs form a roughly Japanese-shaped core.
The ringing removing coil is formed separately in a first coil layer for inputting a deflection input current of the deflection coil and a second coil layer for inputting a deflection output current of the deflection coil. the coil layer is formed by separating winding a winding on the bobbin, respectively, fitted and attached to the central magnetic leg of the first of the core in the direction the coil layer and second coil layer to cancel a magnetic field to each other Has been
The outer magnetic legs are used to reduce the leakage magnetic field from each of the coil layers.
It is characterized by having a function of forming a magnetic path .

[0006]

[Function] Separately wind the bobbin on each bobbin and wind it.
And the second coil layer are formed separately. For example, a current flows from the input side of the horizontal deflection coil to the first coil layer, a current flows from the output side of the horizontal deflection coil to the second coil layer, and a magnetic field is applied between the first and second coil layers. Fit to the core in the direction to cancel.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a ringing removing coil of the deflection yoke device according to the present invention. The deflection yoke device according to the present embodiment also includes a horizontal deflection coil and a ringing removal coil connected thereto as in the conventional example, but the feature of this embodiment is that the ringing removal coil has a unique configuration. As shown in FIG. 1, the ringing removing coil includes two E-shaped cores 5, a bobbin 6, and a first coil layer 13 formed by winding a winding 4 on the bobbin 6.
And the second coil layer 14. The bobbin 6 is integrally formed, and flanges 12a and 12b are provided at both ends thereof, and a flange 12c is formed at a central portion. The bobbin 6 has a winding drum portion divided into an A region and a B region by a central flange 12c. The windings 4 are wound independently in the A region and the B region, and the first coil layer is formed. 13th and 2nd
And the coil layer 14 are formed separately.

The first coil layer 13 is formed of an E-shaped core 5
The first ringing removal coil 9 is formed by fitting to the center magnetic leg 11a of FIG. The first ringing removing coil 9 receives, for example, a deflection input current of a horizontal deflection coil, and the second ringing removing coil 10 receives a deflection output current of a horizontal deflection coil. The first coil layer
The 13 and the second coil layer 14 are fitted and mounted on the central magnetic legs 11a and 11b of the E-shaped cores 5a and 5b in such a direction that the magnetic fields cancel each other. As shown in FIG.
Outer magnetic leg 16a of core 5a and outer side of E-shaped core 5b
The center magnetic legs 11a and 11b are surrounded by the magnetic legs 16b.
Center magnetic legs 11a, 11b and outer magnetic legs 16a, 16b.
b forms a substantially Japanese character-shaped core,
The magnetic legs 16a and 16b are the leakage magnetic fields from the coil layers 13 and 14, respectively.
It has a function of forming a magnetic path for reduction.

According to the present embodiment, the first coil layer 13 and the second coil layer 14 are formed independently of each other, and the two coils 13 and 14 are oriented in such a way that the magnetic fields are canceled out. Since the cores 5a and 5b are fitted and mounted, the influence of harmonics is eliminated, and the occurrence of a so-called ringing phenomenon can be prevented.

Also, the first coil layer 13 and the second coil layer
Since the winding 14 is independently wound around the bobbin 6 separated into the two regions A and B, the winding is separated and formed, so that the troublesome work of manual winding as in the conventional bifilar winding operation is eliminated. In addition, since automatic winding becomes possible, the winding operation is facilitated, thereby improving the working efficiency and greatly increasing the productivity.

Further, the core as the magnetic material is changed from the conventional donut-shaped core 3 to the E-shaped cores 5a and 5b in the present embodiment, and the coil layers 13 and 14 are formed on the center magnetic legs 11a and 11b.
Is fitted, a magnetic path is formed around the coil layers 13 and 14 by the outer magnetic legs 16a and 16b of the E-shaped cores 5a and 5b, and the leakage magnetic field can be greatly reduced. .

The present invention is not limited to the above embodiment, but can take various embodiments. For example, in the above embodiment, two E-shaped cores 5a and 5b are used to face each other, but this is substantially combined with the E-shaped core 5 and the I-shaped core 7 as shown in FIG. Japanese character shape
May be constituted .

In the above embodiment, the bobbin 6 is an integrally molded product. However, the bobbin 6 is separated into two independent bobbins, and a winding is wound around each bobbin, and the first coil layer and the second A coil layer may be formed.

Further, the winding of the coil may use a coated lead wire as in the conventional example, or may use an enamel wire or the like.

[0015]

According to the invention, the first coil layer and the second coil layer are independently formed by winding a winding wire around a bobbin, respectively, so that the coated lead wire is manually wound by a bifilar winding as in the conventional case. Since extremely complicated winding work can be eliminated and the winding work can be automated, the winding work becomes extremely easy, thereby improving work efficiency and greatly increasing productivity. Also, a rod-shaped central magnetic leg and the central magnetic leg
A substantially Japanese-shaped core formed by outer magnetic legs surrounding the legs
And the first coil layer and the second coil layer are mutually
Be attached to the center magnetic leg with the magnetic flux
From the first coil layer and the second coil layer
The magnetic flux cancels each other and the magnetic flux leaking from the central magnetic leg
The bundle also acts to pass through the magnetic path of the outer magnetic leg that is almost close
Therefore, greatly reduce the leakage flux from the coil layer
Due to the leakage magnetic field from the ringing removal coil
Various adverse effects can be substantially avoided.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a main part of a ringing removal coil of a deflection yoke device according to the present embodiment.

FIG. 2 is an explanatory view showing a combination of an E-shaped core and an I-shaped core used for a ringing removal coil of the deflection yoke device.

FIG. 3 shows a ringing removal coil of a conventional deflection yoke device.
FIG.

[Explanation of symbols]

 Reference Signs List 4 winding 5, 5a, 5b E-shaped core 6 bobbin 9 first ringing removing coil 10 second ringing removing coil 12a, 12b, 12c flange 13 first coil layer 14 second coil layer

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Murakami 2-26-10 Tenjin, Nagaokakyo-shi, Kyoto Murata Manufacturing Co., Ltd. (56) References JP-A-5-22618 (JP, A) (58) Field surveyed (Int.Cl. ⁶ , DB name) H04N 3/16 H01J 29/76

Claims (1)

(57) [Scope of request for utility model registration] In a deflection yoke device in which a ringing removing coil is connected to a deflection coil, a rod-shaped central magnetic leg is provided.
And an outer magnetic leg surrounding the central magnetic leg.
Both ends are connected to the outer magnetic legs, respectively.
The center leg and the outer leg form a roughly Japanese-shaped core.
The ringing removal coil is formed separately in a first coil layer for inputting a deflection input current of the deflection coil and a second coil layer for inputting a deflection output current of the deflection coil;
The first coil layer and the second coil layer are formed by separately winding windings around bobbins, respectively.
It is fitted and attached to the central magnetic leg of the first coil layer and the second of the core in the direction coil layer to cancel a magnetic field to each other
The outer magnetic legs have low leakage magnetic field from each coil layer.
A deflection yoke device having a function of forming a reduction magnetic path .