JP2002075245A - Deflection yoke device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the deflection efficiency by shortening the inner diameter of the core and also reduce the manufacturing process. SOLUTION: The deflection yoke device comprises a core of a nearly hollow rotator shape which widens gradually toward the funnel side from the neck side, a deflection coil bobbin 2 which is provided along the inner face of the core for winding the vertical deflection coil and horizontal deflection coil, plural ribs 7 which are provided continuously on the inner face of the deflection coil bobbin 2 extending in the direction of the axis, and a coil guide portion 7a which is provided respectively on the funnel side and the neck side of the deflection coil bobbin 2 of the plural ribs 7 and hooks and winds by separating the vertical deflection coil and the horizontal deflection coil. The part where the vertical deflection yoke coil is wound and the part where the horizontal deflection coil is wound on the inner face of the deflection coil bobbin 2 are separated by the ribs 7 and arranged in the direction of the circumference of the deflection coil bobbin 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vertical deflection coil and a horizontal deflection coil which are wound along the inner surface of a single deflection coil bobbin so as to be spaced apart from each other in the axial direction without overlapping.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke device that is configured to be capable of continuous winding so that the inner diameter of a core can be reduced and deflection efficiency can be improved.

[0002]

2. Description of the Related Art Generally, a deflection yoke device comprises a horizontal deflection coil and a vertical deflection coil. Deflection coils are classified into saddle type coils wound in a toroidal shape and toroidal type coils wound in a toroidal shape, depending on the winding method. A device using a saddle type coil for each of the horizontal deflection coil and the vertical deflection coil is called a saddle / saddle type deflection yoke device.

FIG. 6 shows an example of a conventional deflection yoke device in which a horizontal deflection coil and a vertical deflection coil are wound in a saddle shape. A ferrite core 13 as a deflection yoke core is inserted inside the outer bobbin 15 of the deflection yoke device 11,
Groove 14b of funnel bend portion 14 of outer bobbin 15
Then, the funnel side end of the ferrite core 13 is inserted and fitted. Next, by pushing the funnel bend portion 14 into the outer bobbin 15, the funnel bend portion 14 and the outer bobbin 15 are fitted and integrated. Winding rib 14
An electric wire as the vertical deflection coil 19 is wound along the inner surface of the ferrite core 13 so as to reciprocate between the a and 15a.

When the ferrite core 13 is mounted, the vertical deflection coil 19 is wound, and the integrated outer bobbin 15 and funnel bend portion 14 are extrapolated to the inner bobbin 12, the outer bobbin 15 is provided on the neck side of the inner bobbin 12. The positioning rib 12c contacts the inner diameter of the ferrite core 13. Next, an electric wire as a horizontal deflection coil 20 is connected along the inner surface of the inner bobbin 12 so as to connect the neck side end portion 12b of the inner bobbin 12 and the neck bend portion 18 and reciprocate between the winding ribs 12a, 18a. It is wound.

[0005]

In the deflection yoke device 11 as described above, the three-layer structure of the vertical deflection coil 19, the side wall of the inner bobbin 12, and the horizontal deflection coil 20 is provided inside the ferrite core 13. Therefore, there is a problem that the inner diameters of the ferrite core 13 and the vertical deflection coil 19 increase accordingly, and the deflection efficiency decreases.

Therefore, the present invention is configured such that a vertical deflection coil and a horizontal deflection coil are wound separately along the inner surface of a single deflection coil bobbin without overlapping each other, and can be continuously wound. Accordingly, it is an object of the present invention to provide a deflection yoke device capable of reducing the core inner diameter and improving the deflection efficiency.

[0007]

According to the present invention, there is provided a deflection yoke device comprising: a substantially hollow rotor-shaped core gradually expanding from a neck side to a funnel side; and a vertical deflection coil provided along an inner surface of the core. And a deflection coil bobbin for winding a horizontal deflection coil, a plurality of ribs extending continuously in the axial direction on the inner surface of the deflection coil bobbin, and a plurality of ribs for the deflection coil. A winding guide portion provided on each of the funnel side and the neck side of the bobbin to separate and wind the vertical deflection coil and the horizontal deflection coil, wherein the vertical deflection coil on the inner surface of the bobbin for the deflection coil is wound. The linear part and the part on which the horizontal deflection coil is wound are separated by the rib, and are arranged in the circumferential direction of the deflection coil bobbin. A.

In the deflection yoke device according to the present invention, the vertical deflection coil and the horizontal deflection coil are separately wound around the funnel-side and neck-side winding guides, so that the vertical deflection coil on the inner surface of the deflection coil bobbin is formed. The wound portion and the portion on which the horizontal deflection coil is wound are separated by the rib, so that the vertical deflection coil and the horizontal deflection coil can be wound continuously. As a result, the inner diameter of the core can be reduced, the deflection efficiency can be improved, and winding can be performed continuously, so that the manufacturing process can be shortened and the manufacturing cost of the deflection yoke device can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a deflection yoke device according to the present invention will be described below with reference to the drawings. FIG.
1 is an exploded view of a deflection yoke device according to the present invention. Here, a state where the electric wire is not wound is shown.

The deflection yoke device 1 includes a bottom bobbin 2,
A ferrite core 3 extrapolated to the bottom bobbin 2, covering the ferrite core 3 and fitting with the bottom bobbin 2;
It is roughly constituted by a top bobbin 5 for connecting to the neck side end 2b of the bottom bobbin 2. That is, the deflection coil bobbin is formed of the bottom bobbin 2 and the top bobbin 5.

According to the present invention, a vertically wound coil and a horizontally wound coil can be wound continuously along the inner surface of a single deflection coil bobbin without overlapping each other in the axial direction, and can be continuously wound. With this configuration, the inner diameter of the core can be reduced, the deflection efficiency can be improved, and the manufacturing process can be shortened.

In general, a deflection coil used in a cathode ray tube of a video display device such as a color television receiver or a color monitor depends on the winding method, and a saddle-shaped coil wound in a circular shape and a toroidal coil wound in a toroidal shape. There is a coil. A device using a saddle type coil for each of the horizontal deflection coil and the vertical deflection coil is called a saddle / saddle type deflection yoke device.

The bottom bobbin 2 and the top bobbin 5 are formed of a non-magnetic material such as a polypropylene resin. The funnel sides of the bottom bobbin 2 and the top bobbin 5 are formed in an expanded shape, and the neck portion of a cathode ray tube (CRT) is inserted into the bottom bobbin 2.

The bottom bobbin 2 has an annular funnel-side base 2a and a cylindrical neck-side end 2 having a smaller diameter.
b. A plurality of engaging claws 2a-1 are provided on the outer peripheral portion of the funnel side base 2a to be engaged with an engaging portion 5d described later of the funnel side base 5a of the top bobbin 5. A plurality of ribs 7 are formed inside the bottom bobbin 2 so as to extend in the tube axis direction and guide the electric wires of the vertically wound coil and the horizontally wound coil. On the funnel side base 2a side of the rib 7, a winding guide portion 7a is formed to extend in an L-shape on the side surface and to wind the electric wires of the vertical deflection coil and the horizontal deflection coil. The rib 7 and the winding guide 7a will be described later in detail.

Between the bottom bobbin 2 and the top bobbin 5, a ferrite core (hereinafter, referred to as a core) 3 as a deflection yoke core is disposed. The core 3 is made of a magnetic ferrite, and has a funnel side formed in an expanded shape.

The top bobbin 5 is provided with an annular funnel-side base 5a and an annular neck-side base 5b having a smaller diameter. On the outer periphery of the funnel side base 5a of the top bobbin 5, a plurality of engaging portions 5d having an engaging hole for engaging with the engaging claw portion 2a-1 of the bottom bobbin 2 are projected. A cylindrical portion 5c protrudes from the neck side base portion 5b of the top bobbin 5 toward the funnel side. Inside the cylindrical portion 5c, a vertical winding coil and a horizontal winding coil extend in the tube axis direction. A plurality of ribs 8 for guiding the electric wire are formed. On the neck side of the rib 8, a winding guide portion 8a is formed to extend in an inverted L-shape on the side and to wind the electric wires of the vertical deflection coil and the horizontal deflection coil. The rib 8 and the winding guide 8a will be described later in detail. Further, a plurality of openings 5 are provided on the side surface of the top bobbin 5.
e is drilled.

FIG. 2 is a side view showing the deflection yoke device in an assembled state. The core 3 is extrapolated to the bottom bobbin 2, and the engaging claw 2a-1 of the bottom bobbin 2 and the engaging portion 5 of the top bobbin 5
When d is engaged and fitted, the neck side end 2b of the bottom bobbin 2 and the cylindrical portion 5c of the top bobbin 5 come into contact with each other, and the plurality of ribs 7 and the ribs 8 are connected to each other.

FIG. 3 is a view showing the ribs 7 and the winding guide portions 7a and the bottom bobbin 2 viewed from the funnel side.
FIG. 4 is a side view of the ribs 7, 8 and the winding guide portions 7a, 8a. As shown in FIGS. 3 and 4, the rib 7 has a winding guide portion 7a on the funnel side, and the winding guide portion 7a further includes a first funnel side coil groove 7a in order from the neck side.
-1 and a second funnel side coil groove 7a-2. On the other hand, the rib 8 has a winding guide portion 8a on the neck side, and the winding guide portion 8a further includes a first neck side coil groove 8a-1 and a second neck side coil groove 8a-2 in order from the funnel side. Are formed. The electric wire of the vertical deflection coil 9 is wound between the first funnel side coil groove 7a-1 and the first neck side coil groove 8a-1, and the second funnel side coil groove 7a-2 and the second Neck side coil groove 8a
The electric wire of the horizontal deflection coil 10 is wound around between −2 and −2.

First, the electric wire of the vertical deflection coil 9 is wound around the first funnel side coil groove 7a-1 of the predetermined rib 7 and the first neck side coil groove 8a-1 of the rib 8 connected thereto. Next, the second funnel side coil groove 7a-2 of the rib 7 where the electric wire of the vertical deflection coil 9 is not wound and the second neck side coil groove 8a- of the rib 8 connected thereto.
The electric wire of the horizontal deflection coil 10 is wound between the two. Thus, the vertical deflection coil 9 and the horizontal deflection coil 10 can be continuously wound.

FIG. 5 is a schematic view of a deflection yoke device for winding a vertical deflection coil and a horizontal deflection coil as viewed from the funnel side. In FIG. 5, a thin portion indicates a portion where the vertical deflection coil 9 is wound, and a dark portion indicates a portion where the horizontal deflection coil 10 is wound. The portion where the vertical deflection coil 9 is wound and the portion where the horizontal deflection coil 10 is wound are completely insulated from other portions by ribs 7 and 8 which are continuous from the funnel side to the neck side.

Therefore, the bottom bobbin 2 is provided inside the core 3.
And a vertical deflection coil 9 or a horizontal deflection coil 10 wound along the inner surface of the bottom bobbin 2, and a portion where the vertical deflection coil 9 is wound and a portion where the horizontal deflection coil 10 is wound Are arranged in the circumferential direction, so that the core 3 can be made thinner in the radial direction, and the inner diameter of the core 3 can be reduced accordingly, and the deflection efficiency can be improved.

Further, the portion where the vertical deflection coil 9 is wound and the portion where the horizontal deflection coil 10 is wound are close to the tube axis,
The inner diameter of the vertical deflection coil 9 can be reduced, and the deflection efficiency can be improved.

The portion where the vertical deflection coil 9 is wound and the portion where the horizontal deflection coil 10 is wound are isolated from each other by ribs 7 and 8 which are continuous from the funnel side to the neck side, so that they are completely insulated from each other. be able to.

There is no need to provide two deflection coil bobbins, a vertical deflection coil bobbin and a horizontal deflection coil bobbin as in the prior art. A single coil is used to wind the vertical deflection coil 9 and the horizontal deflection coil 10. Since the deflection coil bobbin may be used, the structure is simplified and the manufacturing cost of the apparatus can be reduced.

Since the vertical deflection coil 9 and the horizontal deflection coil 10 are wound on a single deflection coil bobbin, the vertical deflection coil 9 and the horizontal deflection coil 10 can be continuously wound, thereby shortening the manufacturing process. As a result, the manufacturing cost of the deflection yoke device can be reduced.

In the above-described embodiment, the integrated bottom bobbin 2 and the top bobbin 5 are used.
The bottom bobbin 2 and the top bobbin 5 may each be constituted by a pair of halves.

[0027]

As described above, according to the present invention,
A side wall of the deflection coil bobbin and a vertical deflection coil or a horizontal deflection coil wound along the inner surface of the deflection coil bobbin are arranged inside the core, and a portion where the vertical deflection coil is wound and a horizontal deflection coil are disposed. Since the portion where the coil is wound is arranged in the circumferential direction, it can be made thinner in the radial direction, and accordingly, the inner diameter of the core can be made smaller and the deflection efficiency can be improved.

The portion where the vertical deflection coil is wound and the portion where the horizontal deflection coil is wound on the inner surface of the deflection coil bobbin are separated by a continuous rib from the funnel side to the neck side, so that they are completely mutually separated. Can be insulated.

Since the vertical deflection coil and the horizontal deflection coil are wound around a single deflection coil bobbin, the vertical deflection coil and the horizontal deflection coil can be wound continuously, and the manufacturing process is shortened and the deflection yoke is reduced. The manufacturing cost of the device can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded view of a deflection yoke device according to the present invention.

FIG. 2 is a side view of the deflection yoke device in an assembled state.

FIG. 3 is a view showing a rib and a winding guide portion, and a bottom bobbin viewed from a funnel side.

FIG. 4 is a side view of a rib and a winding guide unit.

FIG. 5 is a schematic view of a deflection yoke device for winding a vertical deflection coil and a horizontal deflection coil as viewed from the funnel side.

FIG. 6 is a side sectional view showing an example of a conventional deflection yoke device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Deflection yoke device, 2 ... Bottom bobbin (bobbin for deflection coil), 2a ... Funnel side base, 2b
... Neck side end, 2a-1 ... Engaging claw, 3 ...
Ferrite core (core), 5: Top bobbin (bobbin for deflection coil), 5a: Funnel side base, 5b
... Neck side base part, 5d ... engaging part, 7 ... rib, 7a ... winding guide part, 7a-1 ... first funnel side coil groove (first coil groove) , 7a-2 ... second funnel side coil groove (second coil groove), 8 ...
Rib, 8a: winding guide portion, 8a-1: first neck side coil groove (first coil groove), 8a-2: second neck side coil groove (second coil groove) Coil groove), 9: vertical deflection coil, 10: horizontal deflection coil

Claims (4)

[Claims] 1. A substantially hollow rotor-shaped core gradually expanding from a neck side to a funnel side, and a deflection coil provided along an inner surface of the core for winding a vertical deflection coil and a horizontal deflection coil. A bobbin; a plurality of ribs extending in the axial direction and continuously provided on an inner surface of the deflection coil bobbin; and the plurality of ribs being respectively provided on a funnel side and a neck side of the deflection coil bobbin of the plurality of ribs. A winding guide portion for separating and winding the deflection coil and the horizontal deflection coil, wherein a portion of the inner surface of the deflection coil bobbin where the vertical deflection coil is wound and the horizontal deflection coil are wound A deflection yoke device, wherein the ribs are separated from each other by the ribs and are disposed in a circumferential direction of the deflection coil bobbin. 2. The method according to claim 1, wherein the winding guide section has a first coil groove for winding the vertical deflection coil and a second coil groove for winding the horizontal deflection coil. The deflection yoke device according to claim 1. 3. The winding device according to claim 1, wherein the vertical deflection coil and the horizontal deflection coil are separately wound around a winding guide of a bobbin for the deflection coil, thereby enabling continuous winding. The deflection yoke device according to claim 1. 4. The deflection yoke device according to claim 1, wherein the deflection coil bobbin can be divided into at least two in the axial direction.