JP2605827Y2 - Deflection yoke - 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 mounted on a television receiver or a display device.

[0002]

2. Description of the Related Art FIG. 9 shows a deflection yoke mounted on a cathode ray tube of a television receiver or a display device. In this type of deflection yoke, horizontal deflection coils (not shown) are mounted on the top side and the bottom side along the inner peripheral surface of a bobbin 2 as a bobbin having a bosh shape, and a vertical deflection coil is mounted on the outside of the bobbin 2. It is provided with a deflection coil (not shown) and a core (not shown).

FIG. 8 shows an example of a bobbin of a saddle type deflection coil used for a general deflection yoke. The bobbin 2 is provided with a plurality of coil winding grooves 5, and for example, a winding 11 as shown in FIG. 7 is stacked and wound in the coil winding groove 5 to form a deflection coil. As the winding 11, a conductor (including a litz wire) provided with the insulating layer 4 is used.

When the winding wire 11 is wound in the coil winding groove 5, the winding wire 11 is laminated and wound by an automatic winding machine one to several times in a state of a single unseparated single wire. A coil is formed.

[0005]

[Problem to be solved by the invention] However, the winding 11
Due to a change in the direction of tension when winding the wire, as shown in FIG.
There is a problem that the order of 11 is changed and it is not possible to wind as specified by the design, and the deviation of the winding 11 of each deflection coil mass-produced also varies for each product, and the deflection magnetic field is reduced. There was a problem that control could not be performed accurately.

[0006] In order to solve such a problem, the applicant of the present invention replaces the conventional single coil wire with one single wire, and FIG.
A deflection coil formed using a multi-core parallel conductor such as a ribbon wire as shown in FIG.

The multi-core parallel conductor 15 is shown in FIG.
As shown in FIG. 2, conductor wires 8 such as copper or aluminum covered with an insulating layer 4 are arranged in parallel using an adhesive 6 and adhered, or as shown in FIG. A plurality of conductor wires 8 covered with an insulating layer 4 on one side of an insulating sheet 7 are arranged in parallel and bonded using an adhesive 6, or as shown in FIG. A plurality of conductor wires 8 having an adhesive layer 9 formed thereon are arranged in parallel and adhered.

The conductor wires 8 of the multi-core parallel conductor 15 are fixed in order within each multi-core parallel conductor 15, so that the conductor wires 8 are displaced within the respective multi-core parallel conductors 15, or Since the order of the wires does not change, the multi-core parallel conductors 15 are used, and the multi-core parallel conductors 15 are wound around the coil winding groove 5 in a stacked manner, so that the conductor wires 8 can be largely displaced. It can be expected to manufacture a deflection coil that can solve the problem.

However, the conventional deflection coil bobbin 2 has a configuration in which the groove width of the coil winding groove 5 on the head side is significantly larger than the groove width of the coil winding groove 5 on the neck side as shown in FIG. ing. Therefore, when the multi-core parallel conductor 15 of the proposed example is laminated and wound around the coil winding groove 5, the multi-core parallel conductor 15 wound on the head side has a groove width of the coil winding groove 5 of the multi-core parallel conductor 15.
Since the width is extremely larger than the width of the wire, the wire is wound with a deviation, and the wire cannot be wound as specified by the design, and there has been a problem that the deflection magnetic field cannot be accurately controlled.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a multi-core parallel conductor that is displaced when a multi-core parallel conductor is wound from a neck side of a bobbin to a coil winding groove on a head side. An object of the present invention is to provide a deflection yoke capable of precisely controlling a deflection magnetic field without being wound.

[0011]

The present invention is configured as follows to achieve the above object. That is, in the present invention, a plurality of coil winding grooves are formed on the inner peripheral surface of the bobbin in a direction connecting the head side and the neck side, and this coil winding groove is
It is formed with approximately the same groove width from the head side to the neck side
Cage, a deflection yoke is a multi-conductor parallel conductors in the coil winding groove is wound deflection coil is formed, the radius of the flange tip of the coil-winding groove R, the window side of the quarter round portion of the deflection coil When the dead space is W mm, the groove width of the coil winding groove is 2 mm or more, and 、 (πR /
2) It is characterized by being set to -W-4} / 4 or less. Further, the coil winding groove of the bobbin of the deflection yoke is directed from the bottom of the coil winding groove toward the open end.
The groove is formed in a tapered shape so as to increase the groove width .

[0012]

[Function] When a multifilamentary parallel conductor is wound around a coil winding groove, the multifilamentary parallel conductor is wound without shifting in the groove width direction by making the groove width of the coil winding groove connecting the head side and the neck side of the bobbin substantially the same. I do.

Further, the radius of the tip of the flange of the coil winding groove is R,
Window side dead space of 1/4 circumference of deflection coil is Wm
m, the groove width of the coil winding groove is 2 mm or more,
And {(πR / 2) -W- 4} / 4 or less, the winding without play multicore parallel conductors was wide than the groove width of its coiling groove of the groove width, and the inductance L This prevents the characteristics L / R from deteriorating with respect to the resistance R.

Further, the number of coil winding grooves is set to four or more on the basis of the neck side to make the coil distribution a smooth cosin distribution (cosine distribution). Further, since the coil winding groove on the head side is branched, the number of grooves further increases, so that the coil distribution on the head side naturally becomes a smooth cosin distribution.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a main configuration of a deflection yoke according to the present embodiment in which a horizontal deflection coil and a vertical deflection coil are divided into four parts. As shown in FIG. 2, the deflection yoke of this embodiment has a vertical deflection coil 20 and a core 19 mounted outside a horizontal deflection coil 18, and has a bobbin 2H of the horizontal deflection coil 18 and a bobbin of the vertical deflection coil 20. In 2V, coil winding grooves 22 are formed in the connecting wire portions 12 and 13 on the head side and the neck side, respectively. Similarly, a plurality of coil winding grooves 10 are formed on the inner peripheral surface of the bobbin in the direction connecting the neck side to the head side also in the distribution portion 14 of the bobbins 2H and 2V.

The first feature of the present embodiment is that, as shown in FIG. 1, a plurality of coil winding grooves 10 extending from the neck side to the head side are formed on the inner peripheral surface of the distribution portion 14 of the bobbins 2H and 2V. The groove width is formed to be substantially the same groove width.
The feature of this is that the radius of the tip of the flange 3 of the coil winding groove 10 is R,
Window side dead space of 1/4 circumference of deflection coil is Wmm
(If the dead space of the horizontal deflection coil is W = W _H and the dead space of the vertical deflection coil is W = W _V ), the groove width of the coil winding groove 10 is 2 mm or more, and ｛(πR
/ 2) -W-4} / 4 or less.

A third feature is that a multi-core parallel conductive wire having a width larger than the groove width is wound in the coil winding groove 10.

Next, the design conditions of the groove width of the coil winding groove 10 when the multi-core parallel conducting wire 15 is wound around the coil winding groove of the bobbin will be described. First, as shown in FIG. 4, the tip of the flange 3 of the coil winding groove 10 of the bobbin is set to be higher than the laminated coil surface of the multi-core parallel conductor 15 by about 0.5 mm, and the groove width is increased from the head side to the neck side of the bobbin. Approximately the same. The end of the flange 3 is made to have a width of about 1 mm according to the bobbin molding conditions, and a taper 16 is provided in the groove 10 to facilitate winding of the multi-core parallel conductor.

Further, the neck diameter (diameter) of the cathode ray tube is D +
If d (d is a tolerance), the radius of the tip of the flange is R = (D +
d) / 2 + γ (γ is a bobbin tolerance). Now, D = 29
If mm, R is about 16 mm.

The coil distribution of the horizontal deflection coil and the vertical deflection coil is a cosin distribution (cosine distribution) as shown in FIG. In order to obtain a cosine distribution, for example, when the number of coil winding grooves 10 is as small as three as shown in the coil distribution on the right side of FIG. However, if the number of coil winding grooves 10 is four or more based on the neck side as shown in the coil distribution on the left side of FIG. Form a smooth coil distribution state. Further, since the coil winding groove 10 on the head side has four or more grooves because the groove on the neck side is branched, the coil distribution forms a cosine distribution.
The cosine distribution can be formed by setting the number of the coil winding grooves 10 on the neck side to four or more as described above, but the number of grooves on the neck side is set to five as shown in FIG. In this case, a cosine distribution can be naturally formed.

Further, the ratio L / R of the inductance L and the resistance R becomes smaller as the groove width of the coil winding groove becomes smaller, and the characteristics deteriorate, and if the groove width is made smaller, the winding time becomes shorter. And the winding accuracy deteriorates. From the experimental results, it was found that the minimum groove width of the coil winding groove of the allowable limit of the lower L / R was 2 mm. Therefore, in this embodiment, the minimum groove width of the coil winding groove is set to 2 mm, and the maximum groove width is set to ｛(πR / 2) −W
− (4 × 1)｝ / 4. The denominator 4 of the entire expression indicates the minimum number of grooves, (πR / 2) is の 長 the length of the circumference with respect to the flange tip of the coil winding groove, W is the window-side dead space, and 4 × 1 is the minimum. The total length of four flanges obtained by multiplying the number of grooves by four with a flange width of 1 mm is shown. Thus, the width of the multi-core parallel conductive wire is increased according to the groove width, and the winding time is reduced.

Further, the width of the multifilamentary parallel conductor 15 is made wider than the groove width of the coil winding groove 10, and when the multifilamentary parallel conductor is wound in this groove, the multifilamentary parallel conductor 15 is wound without looseness. To do.

According to the present embodiment, the groove width of the coil winding groove 10 is substantially the same from the head side to the neck side of the bobbin.
Make the width of the multi-core parallel conducting wire 15 larger than the groove width of the coil winding groove 10
Since there was wide comb, multi-core parallel wires 1 to the coiling groove 10
When winding 5, the multi-core parallel conducting wire 15 does not come off or rattle, and can be wound as designed.

Further, when the groove width is not less than 2 mm ｛(πR / 2) -W
-4 と し た / 4 or less, the deflection coil in which the multifilamentary parallel wire is wound around the coil winding groove 10 has a good ratio L / R between the inductance L and the resistance R, and precise control of the deflection magnetic field. It becomes possible.

Further, since the number of the coil winding grooves 10 is set to four or more based on the neck side, the coil distribution is smooth.
Form a cosin distribution (cosine distribution). Also, on the head side, the grooves naturally branch and the number of grooves further increases, so cosin
This satisfies the distribution condition.

It should be noted that the present invention is not limited to the above embodiment, but can take various embodiments.

In the above embodiment, the coil winding groove 10 is formed on the bobbin. However, as an application example of the present invention, the coil winding groove 10 may be formed on a winding die. In this case, it is necessary to release the coil from the mold after winding the multi-core parallel conductor.

[0028]

[Effects of the Invention] The present invention uses a multi-core parallel conductor in the coil winding groove.
And the inductance L of the deflection coil formed by winding
If the ratio L / R with the anti-R is to reduce the groove width of the coil winding groove,
Coil winding of the permissible limit with worse L / R
Based on come groove width is 2 mm, the groove width is formed in substantially the same toward the neck side from the head side of bobbin coil
The groove width of the winding groove is 2 mm or more {(πR / 2) -W-4} /
4 or less, the deflection coil in which a multi-core parallel conductor is wound around the coil winding groove has a ratio L of inductance L and resistance R.
/ R is good, and precise control of the deflection magnetic field is possible. Further, as described above, the groove width of the coil winding groove is set to 2 mm.
By widening the above, the winding time can be shortened and the winding
The degree can be improved.

In particular, the coil winding groove is located at the bottom of the coil winding groove.
Tapered so that the groove width increases from the part toward the open end
In the case where the coil is wound,
The multi-core parallel conductor can be easily wound around the groove.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a main configuration of a deflection yoke according to the present embodiment in a state of being divided into four parts.

FIG. 2 is an explanatory view of the structure of the deflection yoke.

FIG. 3 is an explanatory diagram showing a coil distribution state of the deflection coil of the embodiment.

FIG. 4 is an explanatory diagram showing a shape of a coil winding groove of the present embodiment.

FIG. 5 is an explanatory view showing the shape of a conventional coil winding groove.

FIG. 6 is an explanatory view of various forms of a multi-core parallel conducting wire.

FIG. 7 is an explanatory diagram of a coil winding state of a conventional deflection coil.

FIG. 8 is an explanatory diagram of an example of a bobbin of a conventional deflection coil.

FIG. 9 is an explanatory diagram of a general deflection yoke.

[Explanation of symbols]

 2 bobbin 2H bobbin for horizontal deflection coil 2V bobbin for vertical deflection coil 3 flange 5,10 coil winding groove 15 multi-core parallel conducting wire 25 groove width

Claims (2)

(57) [Scope of request for utility model registration] 1. A plurality of coil winding grooves are formed on an inner peripheral surface of a bobbin in a direction connecting a head side and a neck side .
Grooves are formed with approximately the same groove width from the head side to the neck side
Are, a deflection yoke is a multi-conductor parallel conductors in the coil winding groove is wound deflection coil is formed, the radius of the flange tip of the coil-winding groove R, the deflection coil 1 /
Assuming that the window side dead space of the four circumferential portions is W mm, the groove width of the coil winding groove is 2 mm or more, and ｛(π
R / 2) -deflection yoke set to -W-4} / 4 or less. 2. The coil winding groove is formed at the bottom of the coil winding groove.
Tapered so that the groove width increases toward the opening end
Deflection yoke according to claim 1, characterized in that made.