JPH0721940A - Deflection device - Google Patents

Abstract

PURPOSE:To provide a deflection device with no dispersion between wirings and uniformity. CONSTITUTION:Engaging projections 4 are installed on the inner wall surface of a deflection yoke core 1 in the positions shifted 90 deg. at the circumference along the axis direction. A flexible wiring plate 5 consists of flexible wiring plates 5a, 5b, and 5c in each of which an engaging hole and a coil shaped conductive pattern are formed. The flexible wiring plates 5a, 5b, and 5c are stacked by engaging each engaging hole to each engaging projection 4 to mount to the deflection yoke core 1. Each conductive pattern of the flexible wiring plates 5a, 5b, and 5c is connected with a conductor to form a deflection coil, and two pairs of facing deflection coils are installed in the deflection core 1 so as to perpendicularly cross each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring structure of a deflection device attached to a neck portion of a picture tube, for example.

[0002]

2. Description of the Related Art FIG. 11 is a partially broken perspective view showing an example of a conventional deflection device. In the figure, 1 is a deflection yoke core made of ferrite, 2 is a winding in which a coil wire is mechanically wound around the deflection yoke core 1, and FIG. Reference numeral 3 is a terminal portion of the winding 2. In addition,
A pair of windings 2 arranged to face the deflection yoke core 1
Are arranged at positions orthogonal to each other, one pair of windings 2 constitutes a horizontal deflection coil, and the other pair of windings 2 constitutes a vertical deflection coil. Here, for convenience of explanation, one pair of windings Only winding 2 is shown.

Next, the operation of the conventional deflection device will be described. When a current is passed through the winding 2 via the pair of terminals 3, a magnetic field is generated in the deflection yoke core 1. Therefore, the electron beam emitted from the electron gun (not shown)
A magnetic field generated in the deflection yoke core 1 deflects horizontally and vertically so that a raster can be drawn on the picture tube.

[0004]

As described above, in the conventional deflection device, the winding 2 is produced by mechanically winding the coil wire around the deflection yoke core 1. However, there is a problem in that the electron beam is not evenly deflected and the screen is disturbed. Therefore, it is necessary to adjust the magnetic field after machine winding.

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a deflecting device having no unevenness between wirings and having uniformity.

[0006]

A deflection device according to a first aspect of the present invention includes a deflection yoke core and a flexible wiring board mounted on the deflection yoke core and having a coil-shaped conductor pattern formed on a flexible substrate. It is equipped with.

A deflection device according to a second aspect of the present invention includes a deflection yoke core provided with an engaging protrusion.
A flexible wiring board having a conductor pattern formed in a coil shape on a flexible substrate having engagement holes formed therein, the engagement holes being engaged with the engagement protrusions, and the flexible wiring board being provided with a deflection yoke core. It is designed to be attached to.

Further, in the deflection device according to the third aspect of the present invention, the conductor pattern is formed in a coil shape on the deflection yoke core having the locking holes and the flexible substrate having the positioning holes. And a fixing pin, the positioning hole is aligned with the locking hole, and the fixing pin is passed through the positioning hole to be locked in the locking hole. Is attached to the deflection yoke core.

[0009]

In the first aspect of the present invention, since the coil-shaped conductor pattern formed on the flexible substrate of the flexible wiring board mounted on the deflection yoke core constitutes a coil, the mechanical winding work of the coil wire can be performed. It is unnecessary, the variation between the wirings of the coil is reduced, and the mounting of the coil is simplified.

According to the second aspect of the present invention,
Since the flexible wiring board is attached to the deflection yoke core by engaging the engagement hole portion of the flexible wiring board with the engagement protrusion portion of the deflection yoke core, the flexible wiring board, that is, the coil can be easily attached. The mounting position accuracy is improved.

According to the third aspect of the present invention,
Align the alignment hole on the flexible wiring board with the locking hole on the deflection yoke core, and then attach the flexible pin to the deflection yoke core by locking the fixing pin through the alignment hole and locking the locking hole. Therefore, the flexible wiring board, that is, the coil is easily mounted, and the mounting position accuracy is improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. The first embodiment is the first and second embodiments of the present invention.
It is an embodiment according to the invention of. 1 is a perspective view of a deflection device showing a first embodiment of the present invention, FIG. 2 is a perspective view of a deflection yoke core of a deflection device showing a first embodiment of the present invention, and FIGS. 3A and 3B are views of the flexible wiring board of the deflection device, in which FIG. 7A is a plan view of the front surface side, and FIG. In the figure, the same or corresponding parts as those of the conventional deflection device shown in FIG. 11 are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, 4 is an engaging projection provided on the inner circumferential wall surface of the deflection yoke core 1 at a position displaced by 90 ° in the circumferential direction along the axial direction thereof, and 5 is a flexible wiring mounted on the deflection yoke core 1. The flexible wiring board 5 is a board, and the flexible wiring board 5 includes three flexible wiring boards 5a, 5b, 5
It is composed of c.

Next, the structure of the flexible wiring board 5a will be described with reference to FIG. First, as shown in FIG. 3A, an electrode lead-out portion 7a is provided on one side of the flexible substrate 6a, and an engaging hole portion 8a for engaging with the engaging protrusion 4 is provided at the center thereof. Is provided. A coil-shaped conductor pattern 9a is formed on one surface side of the flexible substrate 6a, and the outer peripheral end of the conductor pattern 9a is led out to the electrode lead-out portion 7a. Further, after the inner peripheral end of the conductor pattern 9a is pulled out to the back surface side of the flexible substrate 6a through the through hole 10a,
As shown in FIG. 3B, the electrode lead-out portion 7a is led out to the back surface side. Here, the conductor pattern 9a is formed by bonding a conductor foil to the flexible substrate 6a and then etching, and the pattern shape is a coil shape formed by spirally winding around the engagement hole portion 8a.

As shown in FIGS. 4 and 5, the flexible wiring boards 5b and 5c are also provided with electrode lead-out portions 7b and 7c and engaging hole portions 8b and 8c, as in the above-described flexible wiring board 5a. Flexible substrate 6
Conductor patterns 9b and 9c are formed on b and 6c, outer peripheral ends of the conductor patterns 9b and 9c are drawn out to the electrode lead-out portions 7b and 7c, and further inner peripheral ends thereof are formed into through holes 10b,
It is configured to be pulled out to the back surface side of the electrode lead-out portions 7b, 7c via 10c. Here, the engagement holes 8a, 8
b and 8c are formed in the same shape.

In order to assemble the deflection device having the above structure, first, the flexible wiring board 5a is attached to the deflection yoke core 1 by inserting the engagement protrusion 4 of the deflection yoke core 1 into the engagement hole 8a. To do. Then, similarly, the flexible wiring boards 5b and 5c are sequentially mounted on the deflection yoke core 1. After that, the conductor pattern 9a drawn to the back surface side of the electrode drawing portion 7a of the flexible wiring board 5a.
End of the conductor pattern 9b drawn to the front surface side of the electrode lead-out portion 7b of the flexible wiring board 5b, and the end of the conductor pattern 9b drawn to the back surface side of the electrode lead-out portion 7b of the flexible wiring board 5b. Section and flexible wiring board 5
The electrode 11 is connected to the end of the conductor pattern 9c drawn out to the surface side of the electrode lead-out part 7c of the conductor c. Then, the flexible wiring board 5 is formed by applying an adhesive to the engaging portions of the engaging protrusions 4 and the engaging hole portions 8a, 8b, 8c, and stacking them.
The a, 5b and 5c are fixed to the deflection yoke core 1. Therefore, an end portion of the conductor pattern 9a drawn to the front surface side of the electrode lead-out portion 7a of the flexible wiring board 5a and an end portion of the conductor pattern 9c drawn to the back surface side of the electrode lead-out portion 7c of the flexible wiring board 5c are provided. As shown in FIG. 6, the flexible wiring board 5 is disposed on the engaging protrusion 4 of the deflection yoke core 1 as the terminals 3 and 3, respectively.

In this way, the flexible wiring board 5 is arranged on each of the engaging protrusions 4 of the deflection yoke core 1, and the deflection device is assembled. Here, the conductor patterns 9a, 9b, 9c are connected by a conductor 11 to form a deflection coil having a predetermined number of turns.

In the deflection device according to the first embodiment, a magnetic field is generated in the deflection yoke core 1 by passing a current through the coils formed of the conductor patterns 9a, 9b and 9c via the terminals 3 and 3. Therefore, an electron gun (not shown)
The electron beam emitted from is deflected horizontally and vertically by the magnetic field generated in the deflection yoke core 1, and a raster can be drawn on the picture tube.

As described above, according to the first embodiment, since the flexible wiring boards 5a, 5b, 5c provided with the conductor patterns 9a, 9b, 9c are mounted on the deflection yoke core 1, the conductor patterns 9a, 9b. , 9c form a coil, and it is not necessary to mechanically wind the coil wire around the deflection yoke core 1, so that the coil can be easily attached and the variation between the wirings of the coil can be reduced. As a result, there is an effect that the cost can be reduced and a CRT having an image without distortion can be manufactured.

Further, since the deflection yoke core 1 is provided with the engaging protrusion 4 and the flexible wiring boards 5a, 5b, 5c are provided with the engaging holes 8a, 8b, 8c, the engaging hole 8 is formed.
The flexible wiring boards 5a, 5b, and 5c are positioned relative to each other only by engaging the a, 8b, and 8c with the engaging protrusions 4, respectively, and the flexible wiring board 5 is positioned with respect to the deflection yoke core 1. Further, there is an effect that the assemblability of the deflection device is improved.

Example 2. The second embodiment is an embodiment according to the first and third inventions of the present invention. 7 is a perspective view of an essential part of a deflection device showing a second embodiment of the present invention, in which 12 is a flexible wiring board, and this wiring board 12 is composed of three flexible wiring boards 12a, 12a.
b, 12c. Reference numeral 13 is a fixed pin for fixing the flexible wiring board 12 to the deflection yoke core 1. The fixed pin 13 has a pin portion 13 as shown in FIG.
It is composed of a and a fixed portion 13b.

Here, each component will be described. In the deflection yoke core 1, as shown in FIG.
Is provided. In addition, the flexible wiring board 12a
Is the flexible substrate 15 as shown in FIG.
An electrode lead-out portion 16a is provided on one side of a, and a positioning hole portion 17a is provided at the center of the electrode lead-out portion 16a so as to coincide with the locking hole portion 14. A coil-shaped conductor pattern 9a is formed on one surface side of the flexible substrate 15a, and the outer peripheral end of the conductor pattern 9a is formed on the electrode lead-out portion 16.
It has been pulled out to a. Furthermore, this conductor pattern 9
The inner peripheral edge of a is drawn to the back surface side of the flexible substrate 15a through the through hole 10a, and then to the back surface side of the electrode drawing portion 16a, as shown in FIG. 9B. The flexible wiring boards 12b and 12c are also
Although not shown, the flexible wiring board 12a has the same configuration.

In order to assemble the deflection device having the above-mentioned structure, the alignment hole 17a is provided in the deflection yoke core 1
The flexible wiring board 12a is arranged so as to be in the same position as the locking hole portion 14 of the flexible wiring board 12b.
12c are sequentially arranged in the same manner. And the fixed pin 1
The pin portion 13a of No. 3 penetrates the alignment hole portion of the flexible wiring board 12 and is fitted into the locking hole portion 14 to be locked,
Flexible wiring board 12, a12 by fixing portion 13b
b and 12c are pressed and fixed to the deflection yoke core 1.
Then, the conductor patterns 9a, 9b and 9c are connected by the conductor 11 as in the first embodiment. Further, two pairs of the flexible wiring boards 12 facing each other are similarly arranged in the deflection yoke core 1 so as to be orthogonal to each other, and the deflection device is assembled.

As described above, according to the second embodiment, since the flexible wiring boards 12a, 12b, 12c provided with the conductor patterns 9a, 9b, 9c are mounted on the deflection yoke core 1, the same as the first embodiment. Similarly, it is not necessary to mechanically wind the coil wire around the deflection yoke core 1, the coil can be easily attached, and the variation between the wirings of the coil can be reduced.

Further, since the deflection yoke core 1 is provided with the locking hole portion 14 and the flexible wiring board 12 is provided with the positioning hole portion, the positioning hole portion is aligned with the locking hole portion 14, and the fixing pin 13 is provided. The flexible wiring boards 12a, 12b, 12c are positioned relative to each other only by inserting the pin portion 13a of the flexible wiring board 12 into the locking hole portion 14 through the alignment hole portion to lock the flexible wiring board 12a, 12b, 12c. Positioning with respect to 1. Further, there is an effect that the assemblability of the deflection device is improved.

Example 3. The third embodiment is another embodiment according to the first to third inventions of the present invention. In the first embodiment, the coil-shaped conductor patterns 9a, 9 and 9 are formed on the flexible substrates 6a, 6b and 6c, but in the third embodiment, the parallel circuit pattern is formed on the flexible substrate. By arranging a plurality of flexible substrates in a ring shape on the deflection yoke core 1 and connecting the ends of the parallel circuit pattern with conductors to form one coil-shaped conductor pattern as a whole, the same effect is obtained.

Example 4. The fourth embodiment is still another embodiment of the first to third inventions of the present invention. In the first embodiment, the flexible wiring boards 5a, 5b, 5c are provided with the engaging hole portions 8a, 8b, 8c, and the deflection projection core 4 is engaged with the engaging hole portions 8a, 8b, 8c. Positioning of the flexible wiring board 5 with respect to 1 and mutual positioning of the flexible wiring boards 5a, 5b, 5c are performed, but in the fourth embodiment, the engaging hole portion that engages with the engaging protrusion portion 4 is provided with the flexible wiring. The flexible wiring boards 5a, 5b, 5c are formed only on the board 5a, and the flexible wiring boards 5a, 5b, 5c are formed with projections and depressions that engage with each other. It is assumed that the flexible wiring board 5 is positioned with respect to the deflection yoke core 1 by the engagement of the dowel portion and the engagement protrusion portion 4, and the same effect is obtained.

In each of the above embodiments, the conductor pattern is formed by etching, but the same effect can be obtained even if the conductor pattern is formed by printing on a flexible substrate.

Further, in each of the above embodiments, the flexible wiring board 5 is formed by laminating three flexible wiring boards, but the flexible wiring boards 5 and 12 are not limited to the lamination of three sheets, and more are provided. It may be configured by stacking a number of wiring boards, or may be configured by one wiring board.

[0030]

Since the present invention is constituted as described above, it has the following effects.

In the deflection device according to the first aspect of the present invention, the deflection yoke core and the deflection yoke core are mounted,
Since the flexible wiring board is provided with a coil-shaped conductor pattern formed on a flexible substrate, it is not necessary to mechanically wind the coil wire around the deflection yoke core, which simplifies the mounting of the coil and the wiring of the coil. Variations between them can be reduced, and a uniform and inexpensive deflection device can be obtained.

Further, in the deflection device according to the second aspect of the present invention, the conductor pattern is formed in a coil shape on the deflection yoke core provided with the engaging protrusion and the flexible substrate provided with the engaging hole. In addition to the effect of the first invention, the flexible wiring board is attached to the deflection yoke core by engaging the engaging hole portion with the engaging projection portion. Positioning of the flexible wiring board is facilitated, and assemblability is improved.

Further, in the deflection device according to the thirteenth wiring board of this wiring board, the conductor pattern is formed in a coil shape on the deflection yoke core provided with the locking hole portion and the flexible substrate provided with the alignment hole portion. A flexible wiring board formed and a fixing pin are provided, the positioning hole is aligned with the locking hole, and the fixing pin penetrates the positioning hole and is locked in the locking hole to provide flexibility. Since the wiring board is mounted on the deflection yoke core, the same effect as that of the second invention can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a deflection device showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a deflection yoke core of the deflection device according to the first embodiment of the present invention.

3A and 3B are diagrams of a flexible wiring board of a deflection device showing Embodiment 1 of the present invention, in which FIG. 3A is a plan view of a front surface side thereof, and FIG. 3B is a plan view of a back surface side thereof.

4A and 4B are views of a flexible wiring board of a deflection device showing Embodiment 1 of the present invention, in which FIG. 4A is a plan view of a front surface side thereof, and FIG. 4B is a plan view of a back surface side thereof.

5A and 5B are views of a flexible wiring board of a deflection device showing Embodiment 1 of the present invention, in which FIG. 5A is a plan view of a front surface side thereof, and FIG. 5B is a plan view of a back surface side thereof.

FIG. 6 is a perspective view of a main part of the deflection device according to the first embodiment of the present invention.

FIG. 7 is a perspective view of a main part of a deflection device showing a second embodiment of the present invention.

FIG. 8 is a perspective view of a main portion of a deflection yoke core of a deflection device showing a second embodiment of the present invention.

9A and 9B are views of a flexible wiring board of a deflection device showing Embodiment 2 of the present invention, in which FIG. 9A is a plan view of a front surface side thereof, and FIG. 9B is a plan view of a back surface side thereof.

FIG. 10 is a perspective view of a fixing pin of a deflecting device showing Embodiment 2 of the present invention.

FIG. 11 is a partially cutaway perspective view showing an example of a conventional deflection device.

[Explanation of symbols]

 1 Deflection yoke core 4 Engaging protrusions 5, 5a, 5b, 5c Flexible wiring boards 6a, 6b, 6c Flexible boards 8a, 8b, 8c Engagement holes 9a, 9b, 9c Conductor patterns 12, 12a, 12b, 12c Flexible wiring Plate 13 Fixing pin 14 Locking hole 15a Flexible board 17a Positioning hole

Claims (3)

[Claims] 1. A deflection device comprising: a deflection yoke core; and a flexible wiring board mounted on the deflection yoke core and having a coil-shaped conductor pattern formed on a flexible substrate. 2. A deflection yoke core provided with an engagement protrusion, and a flexible wiring board having a conductor pattern formed in a coil shape on a flexible substrate provided with an engagement hole, wherein the engagement hole is provided. A deflection device, wherein a flexible wiring board is mounted on the deflection yoke core by engaging a portion with the engagement protrusion. 3. A deflection yoke core having a locking hole, a flexible wiring board having a conductor pattern formed in a coil shape on a flexible substrate having a positioning hole, and a fixing pin. The positioning hole is aligned with the locking hole, the fixing pin is passed through the positioning hole and locked in the locking hole, and the flexible wiring board is mounted on the deflection yoke core. A deflection device characterized by the above.