JP3334232B2 - Deflection yoke with multi-core parallel conductor and deflection coil of the conductor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-core parallel conductor used for a deflection yoke mounted on a television receiver or a display device, and a deflection yoke provided with a deflection coil of the conductor.

[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, and corresponds to the specifications of the cathode ray tube and the characteristics of a screen. The distribution of the deflection magnetic field is set at the design stage, and the distribution of the deflection magnetic field is
The coil distribution of the deflection coil is adjusted by winding a discrete single wire around the coil winding groove 5 of the bobbin 2 as shown in FIG.

[0003]

[SUMMARY OF THE INVENTION However, as shown in FIG. 10, a method of winding an automatic winding machine one by one - this number remains solid wire winding 11 Woba Rabara the coil winding grooves 5,
Due to the change in the direction of tension when winding the winding 11,
There is a problem that the winding 11 is displaced and shifted, or the order of the windings 11 is interchanged, so that the winding cannot be performed as specified by design, and furthermore, the deviation of the winding 11 of each deflection coil mass-produced. Also vary from product to product,
There was a problem that the deflection magnetic field could not be set accurately.

In order to solve such a problem, the present applicant uses a multi-core parallel conductor such as a ribbon wire as shown in FIG. 9 in place of the conventional single coil conductor. A deflection coil to be formed is proposed.

[0005] As the multi-core parallel conductor 15, as shown in FIG. 9 (a), a conductor such as copper or aluminum covered with an insulating layer 4 is arranged in parallel using an adhesive 6 as a core 10. As shown in FIG. 2B, a plurality of core wires 10 in which conductor wires are covered with an insulating layer 4 on one surface of an insulating sheet 7 made of resin or the like are arranged in parallel as shown in FIG. And a plurality of core wires 10 on which an insulating layer 4 and an adhesive layer 9 are formed are arranged and adhered in parallel, as shown in FIG.

The core wires 10 of the multi-core parallel conductors 15 are fixed in order within the respective multi-core parallel conductors 15, so that the core wires 10 are displaced within the respective multi-core parallel conductors 15, or Since the order of the multi-core parallel conductors is not changed, these multi-core parallel conductors 15 are used.
15 Preparation of deflection coils that can eliminate a significant deviation or the like of the core wire 10 by winding the coil winding groove 5 can be expected.

By the way, a plurality as shown in FIG. 8 (a)
When an alternating current is applied to a multi-core parallel conductor 15 formed by connecting the core wires 10 of each other, a magnetic field is generated in each core wire 10, but when the magnetic field crosses the other core wires 10, the impedance of the conductive core wire 10 increases.
And, yet more and more increases when the high frequency. At this time, the core wire 10 of the left end side of the multicore parallel conductors 15 No. 1 and
No. the core wire 10 of the right end side When n, since the magnetic field generated from <br/> through Denshin line 10 located in the center side across the sides of the adjacent core wire in turn, passing Denshin center position corresponding to the number of adjacent core <br Line 10 has an increased impedance. On the other hand, the left end No.
Core across a magnetic field is only the right of the core wire in the case of 1 of the core, likewise right end No. In the case of n core wires, since only the left core wire crosses the magnetic field, the impedance of the left and right end core wires is small. Therefore, the center core wire
Current flowing through the 10 small, and the current flowing through the core wire 10 of the left and right end side becomes large, as shown in (c) of FIG. 8, a current distribution pattern of multi-core parallel conductors left-right balance is kept solid Draw the curve of C.

Further, an eddy current is generated by the magnetic field in the core wires 10 at the same time, also, the copper loss is generated by current flowing in each conductor 10. The copper loss P is represented by _{^{P = (i 1 2 + i}} 2 2 + ····· i n 2) R. Here, R is the resistance value of each core wire, i ₁ , i
_{2 ····· i n} is No. 1, No. 2 ... N
o. The value of the current flowing through each core wire of n is shown. However, FIG.
(C), when the current distribution is not uniform, the copper loss P is greatly affected by the magnitude of the square of the current and greatly increases as compared with the case of the uniform current distribution. The conduction energy loss occurs due to the loss. In addition, eddy current loss occurs due to generation of eddy current due to passage of a magnetic field through each core wire 10. As described above, the influence of the proximity effect, which is a combination of the energization energy loss that increases the copper loss due to the current imbalance due to the increase in the impedance of the current-carrying conductor and the eddy power loss caused by the eddy current, becomes very large.

By the way, as shown in FIG.
When the multi-core parallel conductor 15 is wound in the coil winding grooves 5 of A and 2B, when the multi-core parallel conductor is energized, N
o. On the outside of the first core 10 (window side), since there is no core to cross the magnetic field, increase in the impedance of the passing Denshin line 10 in window side (No.1) is small. On the other hand, on the separate side (N
o. The core wire 10 on the n-side) bobbin 2B side is a half-split type
No. 10 is stacked with the separates 16A and 16B interposed therebetween. The magnetic field of the core wire 10 on the n side crosses the core wire 10 on the bobbin 2B side and the core wire 10 on the bobbin 2A side.
Therefore, No. The core wire 10 on the n side is the window side No. The core wire that the magnetic field crosses compared to the core wire 10 on the one side is the core wire on the bobbin 2B side
It increases by the amount that crosses 10, and the impedance becomes larger than that of the window-side core wire 10 by that amount. Therefore, FIG.
As shown in the figure, a large current flows through the core wire 10 on the window side, the current decreases by an amount corresponding to the increase in the impedance on the core wire 10 on the separate side, and a small current flows through the core wire 10 on the center side due to the increase in the impedance. current distribution uneven and, to paint the curve indicated by the solid line a of imbalance, broken one point
A uniform current distribution like the line B cannot be expected.

As described above, since the copper loss P increases due to the imbalance of the current distribution, there is a problem that the multi-core parallel conductor 15, particularly the window-side core, easily generates heat and the temperature rises.
At the same time, the power loss increases. Also, as shown in FIG.
In a multi-scan type display device, changing the horizontal scanning frequency from 31.5KHz to 64KHz, for example,
Since the current flowing through the window side of the core wire is further increased varies a further imbalance pattern of the current distribution, polarized
There is a problem that the convergence of the screen of the cathode ray tube changes due to the change in the distribution of the directional magnetic field. Therefore, there is a problem that a high-quality image cannot be obtained with a multi-scan type display device.

[0011] The present invention has been made to solve the above problems, when current flows in the deflection yoke, uneven and Ann due to the proximity effect of the current flowing through the multi-core parallel guide lines A multi-core parallel conductor and a deflecting coil for that conductor that can eliminate the balance to suppress heat generation and power loss, and that does not change the convergence of the screen of the cathode ray tube even in the multi-scan type where the horizontal scanning frequency changes. And a deflection yoke having the same.

[0012]

The present invention is configured as follows to achieve the above object. That is, the multi-core parallel conductor of the present invention is a strip-shaped multi-core parallel conductor formed by connecting a plurality of conductor wires in parallel via an insulating layer, and a central portion of a continuous core array of the multi-core parallel conductor. and it is configured the core wire positioned as characterized by replacing the non-conductive line.

The deflection yoke of the present invention is a deflection yoke provided with a horizontal deflection coil and a vertical deflection coil, wherein one or both of the horizontal deflection coil and the vertical deflection coil are formed by winding the multi-core parallel conductor . It is characterized by having done.

[0014]

[Action] A deflection coil is formed by winding a multi-core parallel conductor,
When a deflecting current is applied to the deflecting yoke assembled with the deflecting coil, the center of the continuous core array of the multi-core parallel conductor is
Averaging the suppressing current distribution pattern proximity effect by the core wire located in a multi-core parallel conductors <br/> replaced with non-conductive line section. Thereby, the heat generation of the multi-core parallel conductive wire can be suppressed. Further, even if the frequency of the deflection current is switched, a change in convergence on the screen of the cathode ray tube can be prevented.

[0015]

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 are given to the same names as those in the conventional example, and detailed description thereof will be omitted. FIG. 1 shows a multifilament parallel conducting wire of a deflection coil relating to the deflection yoke of the present embodiment.

The multi-core parallel conductor 20 of the present embodiment is shown in FIG.
As shown, the coated copper or adhesive layer as the core wire 10 a conductor wire such as aluminum with a (hot melt layer) 9 is adhered are arranged in parallel, the width of the strip conductor lines 20 in the insulating layer 4 two core lines 10 situated in the direction of the central portion 14, for example, is replaced by two electrically non body line 18 consisting of plastic fishing line.

The deflection yoke of this embodiment has a horizontal deflection coil and a vertical deflection coil, and one or both of the horizontal deflection coil and the vertical deflection coil are provided with a multi-core parallel conductor 20 as shown in FIG. Shown in the coil winding groove 5 of the bobbins 2A and 2B
It is formed by winding .

[0018] The polarized to the deflection yoke assembly the deflection coil
When a directional current is applied, the magnetic field of the core wire 10
Crosses the central side 14 nonconducting body line 18 provided on it, the line 18 This is the core 10 side in contact with the electrically non body line 18 for nonconductor, the proximity effect is reduced. Thus, an increase in impedance is reduced, and the copper loss also becomes small, as shown in Figure 3, for the amount of total current is constant flowing throughout the multicore parallel conductors 20, near the central portion side effects Flows more by the reduced amount,
The current flowing on the window side and the separate side is reduced by that amount, and the current distribution pattern draws the curve of the solid line E, and the current distribution is made uniform.

According to this embodiment, the multicore parallel conductors 20 having a nonconducting material line 18 of the fishing line, such as the central portion 14 in made of a synthetic resin in the width direction of the multi-wire parallel conductors formed, parallel the multicore Since the conducting wire 20 is wound around the coil winding groove 5 to form a deflection coil, the proximity effect is reduced by the non -conductor core wire 18 when a current flows through the deflection yoke in which the deflection coil is assembled.
Current distribution is made uniform. As a result, copper loss is reduced,
The temperature rise and the power loss of the multi-core parallel conducting wire 20 can be suppressed.

Further, in the multi-scan type display device, even after changing the horizontal scanning frequency, nonconducting body
It is possible to reduce the proximity effects of multi-core parallel conductors 20 by line 18, varying <br/> of current distribution patterns of the multi-wire parallel conductors 20 is reduced. Therefore, the proximity effect of the multi-core parallel conductor 20
Since the change in the deflection magnetic field distribution due to the result is not recognized, the change in the convergence on the screen of the cathode ray tube can be suppressed. Thus, a high-quality image can be obtained even with a multi-scan type display device.

Furthermore, as a method of equalizing the amount of current flowing through the multi-core parallel guide lines, for example, as shown in FIG. 7, the winding middle intermediate tap or the like of the window side and separate side current amount is not multi provided connect the middle winding the core wire to the core of the center-side current amount is not less, by forming the deflection coils by interchanging the sequence order of the core wire, to equalize the amount of current flowing through each core 10 of the multi-core parallel conductors However, in this case, there is a problem that the work of connecting the core wires is extremely troublesome and the workability is poor. In contrast, in the present embodiment, the multi-core parallel conductor 20
Since the proposed examples and need only wound by the likewise winding machine, with no need to perform a troublesome connecting work middle winding, can be winding work is shortened easy and winding time .

Furthermore, the proximity effect can be reduced by reducing the conductor width of the multi-core parallel conductor to reduce the wire diameter of the core wire 10, but in this case, the conductor width is reduced and the wire diameter is reduced. increased winding time, you drop deflection coil performance ratio L / R between inductance L and resistance R is decreased. In the present embodiment, by disposing the non-conductive wire 18 at the center of the multi-core parallel conductor 20, the conductor width of the multi-core parallel conductor 20 can be reduced without reducing the wire diameter of each core 10 of the multi-core parallel conductor 20. Is equivalent to a state where N is reduced, so that L / R does not decrease much and the winding time does not increase. Further, the thickness of the coil winding collar 3 cannot be reduced to 0.8 mm or less due to the bobbin molding conditions. Therefore, when the coil winding groove width is reduced, the linear area ratio (the ratio of the total volume of the laminated coil to the total volume of the set coil winding groove) is reduced. In this embodiment, since the multi-core parallel conductor 20 having the same width as the width of the multi-core parallel conductor 15 of the proposed example is wound around the coil winding groove of the bobbin, the area factor of the multi-core parallel conductor 20 is reduced. Don't worry about the drop.

Furthermore, since the fishing line generally used widely can be used as the non-conductive wire 18, the non-conductive wire 18 can be obtained at low cost. In this case, it is necessary to use a material having a melting temperature higher than the application temperature (melting temperature) of the non-conductive wire 18 for the inter-layer adhesive layer (hot melt) 9.

The present invention is not limited to the above-described embodiment , but can adopt various embodiments. For example, in the above embodiment, two non-conductive wires
Although the number 18 is provided, the number of the nonconductive wires 18 may be one as long as the number is one or more. Further, as shown in FIG. 1, for example, the disposition position of the nonconductive wire 18 is changed to 23A or 24B.
May be additionally provided at an intermediate position between the outer core wire and the central portion, and the arrangement position may be set as needed.

Further, in the above embodiment, the multi-core parallel conductor having the form shown in FIG. 9C was used.
And (b), and the form is not limited.

Further, in the above-described embodiment, the non-conductor wire 18 having a circular cross section, such as a fishing line, is used. However, as shown in FIG. 2B , a corrugated non-conductor 21 may be used. well, also, the shape of a non-conductor is shown in FIG. 2 (c)
As described above, a rectangular non-conductor 22 or a triangular or quadrangular non-conductor 22 may be used, and the shape is not limited. Note that when winding the multicore parallel conductors 20 to the coil-winding groove 5, gave a clearance to facilitate multi-core parallel conductors 20 are wound between the coiling groove 5 width and multi-core parallel conductor 20 width design Therefore, there is a risk that the layers of the multi-core parallel conductor are stacked and wound in a state where the layers are displaced within the gap, but the multi-core parallel conductor 20 shown in FIG. In case, non-conductor of corrugated shape
By providing the elasticity (springiness) of the elastic member 21, the core wires at both ends of the multi-core parallel conductive wire 20 abut against the flange surface of the coil winding groove 5 due to the elastic restoring force of the corrugated non-conductor 21, causing a displacement. It can be wound with high accuracy.

[0027] Furthermore, in the above embodiment, using a multi-wire parallel conductors 20 to the deflection yoke, multicore parallel conductors 20 of the present invention
Is not limited to a deflection yoke, and may be used, for example, as a winding of a motor or the like.

Furthermore, in the above embodiment, the multifilamentary parallel conductor 20 of the present invention is wound around the coil winding groove 5 of the bobbin 2 to form a deflection coil .
The deflection coil may be formed by winding around a frame . In this case, after the winding is completed, the deflection coil is released from the mold and incorporated into the bobbin of the deflection yoke.

[0029]

According to the present invention, the multifilamentary parallel conductor is a continuous conductor .
Replace the core wire located at the center of the core array with a non-conductive wire
Ete since the construction, multi-core depending on the provision of the non-conductor wire
Reduces the proximity effect of the parallel conductors, it is possible to equalize the current content <br/> distribution pattern of the multi-wire parallel conductors. Thereby, it becomes possible to suppress the temperature rise and the power loss of the multi-core parallel conducting wire. The multi-core parallel conductor is wound around the deflection core.
A deflection yoke using this deflection coil.
When standing, the amount of current flowing through each core of the multi-core parallel conductor
Can be made uniform.

Further, in the multi-scan type display device, even after changing the horizontal scanning frequency, it is possible to reduce the proximity effects of multi-core parallel conductors by non-conductor wire, the multicore parallel conductors current distribution Since the pattern does not change, and therefore the magnetic field distribution does not change,
It is the this <br/> to maintain good convergence of the cathode ray tube screen. Thus, a high-quality image can be obtained even with a multi-scan type display device.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a multi-core parallel conducting wire according to the present invention .

FIG. 2 is an explanatory view showing another embodiment of the multi- core parallel conducting wire according to the present invention .

3 is an explanatory diagram of the current distribution pattern flowing through the multi-core parallel guide lines shown in FIG.

Multicore parallel conductors shown in FIG. 1; FIG illustrates a state wound on coils wound grooves of the bobbin.

[5] The multi-wire parallel conductors of Proposed Example illustrates a state wound into coils wound grooves of the bobbin.

FIG. 6 is an explanatory diagram of a distribution pattern of a current flowing through a multi-core parallel conductive wire of the proposed example when the horizontal scanning frequency is changed.

FIG. 7 is an explanatory diagram of a state in which the winding order of the core wires is changed during the winding of the coil of the multi-core parallel conductive wire.

8 (a) in the figure description of multi-core parallel conductors proposed examples
FIG. 5B shows a state in which an alternating current is applied to the multi-core parallel conductor in the state of FIG.
Explanatory drawing of the current distribution pattern when (c) is
It is explanatory drawing of the electric current distribution pattern when alternating current is supplied to a multifilament parallel conducting wire .

FIG. 9 is an explanatory diagram of various forms of a multi-core parallel core wire.

FIG. 10 is a diagram illustrating a coil winding state of a conventional deflection coil.
It is a fragmentary sectional view .

[11] An example of a bobbin used in a conventional deflection coil shown
FIG .

[Explanation of symbols]

2 Bobbin 5 Coil winding groove 10 Core wire 15 , 20 Multi-core parallel conductor 18 Non-conductor wire

Claims (2)

(57) [Claims] 1. A strip-shaped multi-core parallel conductor formed by connecting a plurality of conductor wires in parallel via an insulating layer, wherein a core located at the center of a continuous core array of the multi-core parallel conductor is not connected. A multi-core parallel conductor characterized by being replaced with a conductor wire. 2. A deflection yoke comprising a horizontal deflection coil and a vertical deflection coil, forms one or multi-core parallel conductors of both claim 1, wherein the horizontal deflection coil and the vertical deflection coil by <br/> winding A deflection yoke, characterized in that: