JPH08129970A - Deflection yoke - Google Patents

Abstract

(57) [Abstract] [Purpose] A deflection yoke capable of effectively avoiding miswiring when reducing a leakage magnetic field by using a cancel coil, and further reducing the number of parts compared with the conventional one. suggest. According to the present invention, a coil bobbin 2d, 2e of a separator 2a for winding a horizontal deflection coil and a cancel coil C is provided.
And are integrally formed.

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 is preferably applied to a case where a canceling coil is used to cancel a leaking magnetic field (that is, a VLF magnetic field) leaking to the outside.

[0002]

2. Description of the Related Art Conventionally, a deflection yoke has been used in combination with a cancel coil as needed to reduce a leakage magnetic field leaking to the outside of a cathode ray tube device. That is, in this type of deflection yoke, a pair of horizontal deflection coils is formed by first winding a magnet wire around a separator in a winding process. Further, in the deflection yoke, a pair of vertical deflection coils is formed by winding magnet wires around a pair of cores in another winding process.

Subsequently, the deflection yoke is
After the vertical deflection coil and the horizontal deflection coil have been assembled together with other components, work such as crosstalk adjustment is performed, whereby in this manufacturing process, for example, the deflection applied to a general domestic cathode ray tube device is deflected. The yoke is manufactured.

On the other hand, in a cathode ray tube device having a high deflection frequency and a large deflection current, the leakage magnetic field becomes large accordingly, so that the deflection yoke applied to this type of cathode ray tube device is exclusively used in another step. The cancel coil is wound on the coil bobbin of. Further, in this type of deflection yoke, in the final assembly step, the cancel coil is attached to the upper and lower outer sides of the deflection yoke, and the cancel coil is connected to the horizontal deflection coil via a connecting terminal plate.

At this time, as shown in FIG. 5, in the deflection yoke, for example, a cancel coil C is connected in series to a pair of horizontal deflection coils H connected in parallel, and the cancel coil C is driven by a horizontal deflection current. . Thus, in the cathode ray tube device having a large leakage magnetic field, the canceling magnetic field generated by the cancel coil C is used to cancel the leakage magnetic field and reduce the magnetic field leaking to the outside of the cathode ray tube device.

[0006]

By the way, when manufacturing the deflection yoke in combination with the cancel coil wound separately as described above, the deflection yoke requires a terminal plate for connection, which increases the number of parts. I have a problem to do. In addition, as the number of parts increases, parts management becomes complicated accordingly.
It is also necessary to store and manage the cancellation coil itself, which is a work-in-progress product.

Further, when the cancel coil is connected to the horizontal deflection coil, there is a possibility that wiring may be erroneous, and there is a problem that reliability is deteriorated accordingly.

The present invention has been made in consideration of the above points, and in reducing the leakage magnetic field by using the cancel coil, it is possible to effectively avoid miswiring and reduce the number of parts as compared with the prior art. It is intended to propose a deflection yoke capable of

[0009]

In order to solve the above problems, the present invention comprises a separator for winding a horizontal deflection coil and a cancel coil wound around a coil bobbin to reduce a leakage magnetic field of the horizontal deflection coil. In the deflection yoke, the coil bobbin is formed integrally with the separator.

Further, the cancel coil is wound continuously and integrally with the horizontal deflection coil.

The separator is integrally formed in a funnel shape as a whole.

[0012]

If the coil bobbin of the cancel coil and the separator of the horizontal deflection coil are integrally formed, the cancel coil can be wound in the same step as the horizontal deflection coil, and the cancel coil can be attached to the deflection yoke. Can be omitted.

Further, at this time, if the cancel coil is continuously and integrally wound with the horizontal deflection coil, the connecting work can be omitted.

Further, the present invention is applied to a horizontal deflection coil using a separator integrally formed in a funnel shape as a whole, and in this case, a pair of horizontal deflection coils can be continuously wound in the same process. Corresponding cancel coils can also be produced in the same step.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 2 is an exploded perspective view showing the deflection yoke. In the deflection yoke 1, the horizontal deflection coil assembly 2 and the vertical deflection coil assembly 3 are first formed in each winding step, and then the horizontal deflection coil assembly 2, the vertical deflection coil assembly 3, and the front cover are formed in the subsequent assembly step. 4 and the back cover 5 are sequentially formed coaxially.

The front cover 4 has a ring-plate-shaped front cover portion 4a for covering the front surface of the deflection yoke 1 and a wall-shaped rising from the periphery of the front cover portion 4a to form the deflection yoke 1.
And a wall portion 4b surrounding the front surface of the. Further, the front cover 4 is formed by cutting out a part of the wall portion 4b.
Two claws 4c are formed, and these claws 4c are held by the horizontal deflection coil assembly 2 by being caught by the brim extending around the front surface of the horizontal deflection coil assembly 2.

Like the conventional front cover of the deflection yoke, the front cover 4 is formed with the pin distortion correction magnet storage position 4d so that the pin distortion correction magnet can be arranged as required. In addition, the wall portion 4b is formed so as to have a bulge, and the bulging portion 4e is provided with a terminal plate 7 of the horizontal deflection coil assembly 2.
It is designed to store.

A magnet 6 for correcting image quality such as purity is attached to the back cover 5 together with a band in advance, so that in the deflection yoke 1, after the back cover 5 and the front cover 4 are assembled in advance, the horizontal deflection coil assembly 2 and It can be easily assembled by simply assembling it with the vertical deflection coil assembly 3.

The vertical deflection coil assembly 3 is formed by winding a magnet wire around a substantially funnel-shaped vertical coil separator. At the time of this winding, the vertical deflection coil assembly 3 has a core integrally formed in a conical tubular shape,
After being placed inside the vertical coil separator, the magnet wire is wound using the protrusions formed at the front end and the rear end of the vertical coil separator, whereby a so-called section winding vertical deflection coil is integrated with the core. It is formed.

The horizontal deflection coil assembly 2 is formed by winding a magnet wire around a horizontal coil separator. Here, as shown in FIG. 3, the horizontal coil separator 2a is integrally formed in a substantially funnel shape, and has brims 2b and 2c formed at the rear end and the front end (the upper end and the lower end correspond to each other in FIG. 3). It is designed to be. Further, the horizontal coil separator 2a includes the collars 2b and 2b.
A plurality of protrusions 2b1 and 2c1 are formed so as to vertically rise from c and then bend toward the outer circumference. A wound horizontal deflection coil is formed.

At this time, the horizontal deflection coil assembly 2
Is formed by integrally forming the horizontal coil separator 2a into a substantially funnel shape, so that a pair of horizontal deflection coils arranged so as to face each other with the neck of the cathode ray tube interposed therebetween are processed in the same winding process. It can be produced, and in this way, in the winding process of this horizontal deflection coil, the winding work is simplified.

Further, in the horizontal coil separator 2a, plate-like members 2d and 2e are integrally formed so as to rise from the flange 2c on the front end side toward the rear end side, and the cancel coil is formed by these plate-like members 2d and 2e. To form a coil bobbin. That is, these plate-like members 2d and 2e are opposed to the central axis of the deflection yoke so as to correspond to the pair of horizontal deflection coils on the outside of the pair of horizontal deflection coils arranged so as to face each other. Formed in parallel.

Further, these plate members 2d and 2e are
After the wall surfaces 2f and 2g rise in a substantially rectangular shape toward the outside of the horizontal coil separator 2a, the ribs 2h and 2i spread outward from the tips of the wall surfaces 2f and 2g.
Is formed and is surrounded by the flange 2h, the wall surface 2f, and the outer wall surface of the plate-like member 2d, and has a U-shaped cross section, and the flange 2i and the wall surface 2 are formed.
The magnet wire is wound around a region having a U-shaped cross section surrounded by g and the outer wall surface of the plate member 2e (hereinafter, these regions will be referred to as a winding portion).

As a result, the horizontal deflection coil assembly 2
The plate-shaped members 2d and 2e form a coil bobbin of a cancel coil, and the coil bobbin is formed integrally with the horizontal coil separator 2a. Therefore, in the horizontal deflection coil assembly 2, the assembly work of the cancel coil and the deflection yoke can be omitted.
The assembling work is simplified accordingly.

Further, these plate members 2d and 2e are
Protrusions 2j rising parallel to the wall surfaces 2f and 2g are respectively formed, and in the horizontal deflection coil assembly 2, the protrusions 2j are used to guide the winding end of the horizontal deflection coil to the winding portion of the cancel coil. .

That is, in the winding process of the horizontal deflection coil, first, the magnet wire is twisted to the terminal 8 of the terminal board 7, and then the magnet wire is hooked on the projection 2c1 formed at the front end of the horizontal coil separator 2a. The magnet wire is run from the projection 2c1 along the inner wall of the horizontal coil separator 2a, and then the magnet wire is hooked on the projection 2b1 at the rear end. Then, in the winding process of the horizontal deflection coil, the magnet wire is run from the projection 2b1 at the rear end along the inner wall of the separator 2a for the horizontal coil, and the magnet wire is hooked on the projection 2c1 at the front end.

In the winding process of the horizontal deflection coil, the projection 2c1 at the front end and the projection 2b1 at the rear end are selectively used so that the projection 2c1 at the front end and the projection 2b1 at the rear end are The magnet wire is run a specified number of times to wind the horizontal deflection coil in a saddle shape. In the winding process of the horizontal deflection coil, when the horizontal deflection coil is wound in this way and the winding of the last one turn is completed, the protrusion 2b at the rear end is formed.
The magnet wire is run from 1 along the inner wall of the horizontal coil separator 2a, and the magnet wire is entangled in the projection 2c1 at the front end. Further, the entangled magnet wire is drawn around to the bases of the plate-like members 2d and 2c by using the front end projection 2c1, and then, if necessary, entangled to the front end projection 2c1 and hooked on the projection 2j to wind the cancel coil. Lead to the line.

As a result, as shown in FIG. 1, in the winding process of the horizontal deflection coil, the horizontal deflection coil assembly 2 is viewed from the rear end thereof, as shown by arrows a and b, as shown in FIG.
When divided into a d-side area and a plate-shaped member 2e-side area, a saddle shape is formed along the inside, front end and rear end of the horizontal coil separator 2a on the plate-shaped member 2d side indicated by the arrow a. After winding the horizontal deflection coil, the magnet wire at the winding end of the horizontal deflection coil is attached to the plate-shaped member 2d.
It is led to the winding part on the side, and here, the cancel coil C is wound in reverse winding with this horizontal deflection coil.

Further, in the winding process of the horizontal deflection coil, when the magnet wire is wound a predetermined number of times around this winding portion and the cancel coil C is wound, the magnet wire is connected to the terminal 9 by using the projection 2c1 at the front end. After the wire is pulled up to the root, the terminal 9 is entwined with a magnet wire and torn off.

Further, in the winding process of the horizontal deflection coil, a saddle-shaped horizontal deflection coil is similarly wound along the inside, front end and rear end of the horizontal coil separator 2a on the side of the plate member 2e indicated by the arrow b. After the winding, the magnet wire at the winding end of the horizontal deflection coil is guided to the winding portion on the plate member 2e side to wind the cancel coil C, and the winding end of the cancel coil C is connected to the terminal 9. Tear it off and tear it off.

Thus, as shown in FIG. 4, in the horizontal deflection coil winding step, the pair of horizontal deflection coils H forming the horizontal deflection magnetic field are continuously wound in the same step as the corresponding cancel coil C. Therefore, the winding work can be simplified and the miswiring can be effectively avoided. Furthermore, the terminal plate for connecting the cancel coil and the horizontal deflection coil can be omitted as in the conventional case, the number of parts can be reduced accordingly, and the entire configuration can be simplified. Can also be shortened.

In particular, in this embodiment, the horizontal coil separator 2a is integrally formed into a substantially funnel shape, and a pair of horizontal deflection coils can be wound in the same step. The horizontal deflection coil assembly 2 can be formed by a simple operation of setting and starting the winding machine, and the winding process can be simplified and shortened accordingly.

Here, the terminal 8 together with the adjacent terminals 9 and 10 is driven into the terminal mounting portion formed on the horizontal coil separator 2a so as to form the terminal plate 7 together with the terminal mounting portion. There is. As a result, the horizontal coil separator 2a reduces the number of parts of the deflection yoke 1 as a whole. Further, in this embodiment, in addition to the terminals 8 and 9 for connecting the horizontal deflection coil, a terminal 10 is arranged so that an inductor or the like for image quality correction can be connected to the horizontal deflection coil as required. .

In the above configuration, in the deflection yoke 1, the horizontal deflection coil is formed by winding the magnet wire around the horizontal coil separator 2a in the horizontal winding process. At this time, the horizontal deflection coil is wound along the inside of the horizontal coil separator 2a by using the protrusions 2c1 and 2b1 at the front and rear ends after the magnet wire is entangled with the terminal 8, and thereby the section winding is performed. A saddle coil is formed.

At the time of this winding, the winding end of each horizontal deflection coil is guided to the plate-shaped members 2d and 2e integrally formed with the horizontal coil separator 2a, where they are canceled at the winding portion of the cancel coil. The coil is wound. As a result, the cancel coil is continuously formed by the magnet wire wound around the horizontal deflection coil, the winding end of the cancel coil is entangled in the terminal 9, and the winding process is completed.

Thus, in the deflection yoke 1, only by setting the horizontal coil separator 2a in the winding machine, the horizontal deflection coil and the cancel coil are continuously and integrally wound to form the horizontal deflection coil assembly 2. Then, the horizontal deflection coil assembly 2 is sequentially combined with the vertical deflection coil assembly 3, the front cover 4, and the back cover 5 coaxially to form the deflection yoke 1.

According to the above structure, the horizontal deflection coil H and the cancel coil C are formed by forming the winding portion of the cancel coil C integrally with the horizontal coil separator 2a.
And can be continuously and integrally wound. As a result, the terminal plate for connecting the horizontal deflection coil and the cancel coil can be omitted, the number of components can be reduced, the winding process can be shortened, and erroneous wiring can be effectively avoided. .

In the above embodiment, the case where the end of winding of the horizontal deflection coil is guided to the winding portion of the cancel coil by using the projection 2j has been described, but the present invention is not limited to this, and for example, a groove is formed. However, the winding end of the horizontal deflection coil may be guided to the winding portion of the cancel coil along this groove.

Further, in the above-described embodiment, the case where the cancel coil and the horizontal deflection coil are connected in series and then the whole is connected in parallel has been described, but the present invention is not limited to this, and the cancel coil and the horizontal deflection coil are connected in parallel. When connecting the deflection coils in parallel after connecting them in parallel,
Various connection methods can be widely applied.

Further, in the above-mentioned embodiment, the case where the horizontal coil separator is integrally formed in a substantially funnel shape has been described, but the present invention is not limited to this, and is divided into two by a virtual plane including the central axis direction. It can also be applied to a separator. In this case, generally, a die is used to wind the horizontal deflection coil, whereby the work of attaching the cancel coil can be simplified.

Further, in the above-mentioned embodiment, the case where the core is held inside the substantially funnel-shaped vertical coil separator and the vertical deflection coil is wound in a saddle shape integrally with the core has been described. The present invention is not limited to this, and can be widely applied to the case of using a conventional toroidal type vertical deflection coil.

[0043]

As described above, according to the present invention, the horizontal deflection coil and the cancel coil are continuously and integrally wound by forming the cancel coil winding portion integrally with the horizontal coil separator. As a result, erroneous wiring can be effectively avoided and the number of parts can be reduced as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a plan view showing a horizontal deflection coil assembly according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an overall configuration of a deflection yoke to which the horizontal deflection coil assembly shown in FIG. 1 is applied.

FIG. 3 is a side view showing a horizontal coil separator applied to the horizontal deflection coil assembly of FIG.

FIG. 4 is a connection diagram showing a connection of the horizontal deflection coil assembly of FIG.

FIG. 5 is a connection diagram showing a connection of horizontal deflection coils of a conventional deflection yoke.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deflection yoke 2 Horizontal deflection coil assembly 2a Horizontal coil separator 2d, 2e Plate member 3 Vertical deflection coil assembly 5 Back cover C Cancel coil

Claims (3)

[Claims] 1. A deflection yoke comprising a separator winding a horizontal deflection coil and a cancel coil wound around a coil bobbin to reduce a leakage magnetic field of the horizontal deflection coil, wherein the coil bobbin is integrated with the separator. A deflection yoke characterized by being formed. 2. The deflection yoke according to claim 1, wherein the cancel coil is wound continuously and integrally with the horizontal deflection coil. 3. The separator according to claim 1 or 2, wherein the separator is integrally formed into a substantially funnel shape.
The deflection yoke described in.