JPH0517908U - Deflection yoke device - Google Patents

Abstract

(57) [Summary] [Object] To provide a deflection yoke device that can be easily mounted in a short time without performing complicated wiring and complicated connection work when connecting a correction coil to a deflection yoke. [Structure] Separately from the bobbin 2 of the deflection yoke 1, a back lid bobbin 8 on which a correction coil 6 is arranged is prepared as a previous step.
When the deflection yoke 1 is assembled, the back lid bobbin 8 is attached to the enlarged diameter portion 4b of the deflection yoke 1 on the bobbin tail (neck) side.
And the correction coil 6 is mounted on the deflection yoke 1.
Both 1 and 6 are easily connected in a short time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a deflection yoke device equipped with a correction coil.

[0002]

[Prior Art]

 FIG. 6 shows a deflection yoke 1 mounted on a cathode ray tube of a television receiver or a display device. This type of deflection yoke 1 has a pair of horizontal deflection coils (not shown) mounted on the top side and the bottom side along the inner peripheral surface of a bobbin 2 having a morning glory shape, and a pair of vertical deflection coils on the outside of the bobbin 2. A deflection coil (not shown) is attached. The bobbin 2 has a half-split shape, and the bobbin 2 having a morning glory shape is formed by combining the bobbin portion 2a in the upper half and the bobbin portion 2b in the lower half.

Enlarged diameter portions 4a and 4b are formed on the head side and the neck side of the bobbin 2, and the enlarged diameter portion 4b on the neck side has a complicated shape in which a narrow groove through which a lead wire such as a deflection coil is passed. Is formed into. A pair of or two pairs of FC (Field Control) coils 6 are attached as correction coils to the rear end surface of the enlarged diameter portion 4b.

[0004]

[Problems to be solved by the device]

 However, since the bobbin 2 of the deflection yoke 1 is divided in half as described above, a horizontal deflection coil is attached to each bobbin portion 2a and a lower bobbin portion 2b for convenience of wiring. There is an inconvenience that the FC coil 6 as the correction coil can be attached to the enlarged diameter portion 4b only after assembling together. When the FC coil 6 is attached and wired after assembling the upper bobbin portion 2a and the lower bobbin portion 2b in this manner, the enlarged diameter portion 4b is attached after the FC coil 6 is attached. There is a problem in that a very complicated and complicated work such as passing the lead wire of the FC coil 6 through a narrow groove provided in the work is forced, and a lot of time is required for the wiring connection work, and workability is extremely deteriorated. there were.

The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide a deflection yaw device that can easily attach and connect a correction coil to a deflection yoke. It is in.

[0006]

[Means for Solving the Problems]

 The present invention is configured as follows to achieve the above object. That is, in the deflection yoke device of the present invention, the back lid bobbin mounted on the tail portion side of the deflection yoke bobbin is formed separately from the deflection yoke bobbin, and the back lid bobbin is provided with a deflection magnetic field correction coil. It is configured to be provided.

[0007]

[Action]

 In the present invention having the above-mentioned structure, a back lid bobbin in which a deflection coil correction coil is arranged is prepared separately from the deflection yoke bobbin. When the deflection yoke is assembled, the correction coil can be incorporated into the deflection yoke only by mounting the back cover bobbin on the tail (neck) side of the deflection yoke.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In the description of this embodiment, the same reference numerals will be given to the same names as those in the conventional example, and detailed description thereof will be omitted. The deflection yoke device of the present embodiment is one in which a horizontal deflection coil and a vertical deflection coil are mounted on the bobbin 2 of the deflection yoke as in the conventional example. The characteristic feature of this embodiment is that the bobbin 2 is mounted on the neck side. The back cover bobbin 8 is provided. FIG. 1 shows a plan view of a first embodiment of the back cover bobbin of the deflection yoke. In the figure, a hole 12 is provided in the center of the rear end surface 16 of the back lid bobbin 8 of the molded product, and two pairs (4) of correction coils 6 are vertically arranged on the rear end surface 16 with the hole 12 interposed therebetween. The correction leads 6 are mounted facing each other in the left-right direction, and the tips of the connection leads 13 of the respective correction coils 6 are pulled out to the top side of the back cover bobbin 8. The back lid bobbin 8 is fitted in the enlarged diameter portion 4b of the deflection yoke 1 on the tail portion (hereinafter referred to as neck) side, and its operating state is shown in FIG. In the same figure, the bobbin 2 is assembled by combining the upper bobbin 2a and the lower bobbin 2b. The bobbin 2 is equipped with a horizontal deflection coil and a vertical deflection coil (not shown), and the deflection yoke 1 is manufactured by this. The back lid bobbin 8 having the correction coil 6 is fitted into the enlarged diameter portion 4b on the neck side of the deflection yoke 1, and the back lid bobbin 8 is integrally mounted on the bobbin 2. The hole 12 at the center of the back lid bobbin 8 shown in FIG. 1 is fitted with the pleated circular tube portion 17 formed at the tip of the deflection yoke 1 on the net side of the bobbin 2 and the inside of the hole 12 is filled with an electron beam. It becomes a transmission hole.

In the first embodiment, in addition to the bobbin 2 of the deflection yoke 1, a back lid bobbin 8 on which a correction coil 6 is disposed is formed as a pre-process, and the back lid bobbin 8 is used as the bobbin 2 of the deflection yoke. Since it is configured to be fitted and mounted on the deflection yoke, the complicated wiring and the complicated connection work which are required in the related art are eliminated, and the correction coil 6 can be easily attached and connected to the deflection yoke 1.

FIG. 3 is a perspective view of the back cover bobbin 8 according to the second embodiment of the present invention. In the figure, a terminal plate 5 is attached to the top side of the back cover bobbin 8 by fitting the engaging claws 2 and the like, and a correction coil is attached to a correction coil terminal 9 provided on the terminal plate 5. A connection lead 13 (not shown) is connected. As with the first embodiment, the back cover bobbin 8 provided with the correction coil and further connected with the terminal plate 5 is fitted into the enlarged diameter portion 4b on the neck side of the deflection yoke 1 to form the back cover bobbin. 8 is integrally attached to bobbin 2.

In the second embodiment, as in the first embodiment, a back lid bobbin 8 in which a correction coil 6 is arranged is formed separately from the bobbin 2 of the deflection yoke 1 in the previous step, and further, the present embodiment. As a feature of the present invention, after mounting the printed circuit board and the terminal board 5 on the back cover bobbin 8 and connecting the correction coil 6 to the print board and the terminal board 5 in advance, the back cover bobbin 8 is connected to the bobbin 2 of the deflection yoke 1. Since the back cover bobbin 8 is simply fitted into the enlarged diameter portion 4b of the bobbin 2, the mounting of the correction coil 6 and the connection with the terminal board 5 are already completed. The connection work between the coil 6 and the deflection yoke 1 can be performed in a shorter time and easier than in the first embodiment.

FIG. 4 shows a fitting portion in which the fitting state of the back lid bobbin 8 and the enlarged diameter portion 4b of the deflection yoke 1 is improved. By forming the engaging claw 10 of No. 1 and engaging the engaging claw 10 with the enlarged diameter portion 4b, it is possible to prevent the back lid bobbin 8 from coming out spontaneously, and the back lid bobbin 8 and the enlarged diameter portion 4b are favorably arranged. Can be fitted and mounted. Also, by providing a plurality of ribs 11 inside the back lid bobbin 8, it is possible to prevent the back lid bobbin 8 from falling toward the deflection yoke 1 and at the same time, prevent rattling.

Further, when the enlarged diameter portion 4b has a circular shape, as shown in FIG. 5, in order to prevent the rotation of the back lid bobbin 8, for example, a pair of left and right protrusions are provided on the outer peripheral side of the enlarged diameter portion 4b. A portion 14 is provided, and a concave portion 15 that fits with the convex portion 14 is provided on the side of the back lid bobbin 8 to prevent the rotation of the back lid bobbin 8 by fitting the both 14 and 15 to each other. The position of the correction coil 6 provided can be accurately regulated with respect to the deflection yoke, and the disturbance and deviation of the correction magnetic field generated from the correction coil 6 can be prevented.

The present invention is not limited to the above-mentioned embodiment, and various embodiments can be adopted. For example, in the above embodiment, the fitting claw 10 is provided on the back lid bobbin 8 side when fitting the back lid bobbin 8 and the enlargement path 4b, but it may be provided on the enlargement path 4b side.

Further, in the above-described embodiment, the convex portion 14 is provided on the side of the enlarged passage 4b and the concave portion 15 is provided on the side of the rear lid 8 to prevent the back lid bobbin 8 from rotating. The convex portion 14 may be provided on the back cover 8 side.

Further, although the FC coil has been described as the correction coil, the FC coil may be replaced with an STC coil, an SSC coil or the like for correcting the misconvergence of the red R and blue B beams on the Y axis. Can also In this case, a pair of STC and SSC coils are provided on the left and right.

[0017]

[Effect of the device]

 According to the present invention, in the deflection yoke equipped with the correction coil, the back lid bobbin provided with the correction coil is formed separately from the bobbin of the deflection yoke, and is fitted and mounted on the tail portion side of the bobbin of the deflection yoke. Therefore, it is very easy to attach the correction coil to the deflection yoke. In addition, when wiring the correction coil, complicated wiring and complicated connection work as in the past are eliminated, and the correction coil can be easily assembled and connected in a short time. Along with this, the manufacturing cost can be significantly reduced.

Further, since the tail portion side of the deflection yoke is covered with the back lid bobbin, the lead lead portion of the deflection coil on the tail portion side is insulated and shielded by the back lid bobbin, and the safety for the insulation of the deflection coil is also improved. It will be excellent.

[Brief description of drawings]

FIG. 1 is a plan view of essential parts of a first embodiment of the present invention showing a state in which a correction coil is arranged on a back lid bobbin.

FIG. 2 is an explanatory diagram of a fitting operation of the back lid bobbin and the deflection yoke bobbin of the embodiment.

FIG. 3 is a perspective view of a second embodiment of the present invention showing a state where a terminal plate is attached to the back lid bobbin.

FIG. 4 is an explanatory view showing an example of a fitting structure of a back lid bobbin and a deflection yoke bobbin.

FIG. 5 is an explanatory diagram of a rotation preventing portion of the back lid bobbin of the same embodiment.

FIG. 6 is an explanatory diagram showing an assembled state of a bobbin 2 and a correction coil 6 of a conventional general deflection yoke.

[Explanation of symbols]

 1 Deflection yoke 2 Bobbin 4b Neck side enlarged diameter portion 6 Correction coil 8 Back lid bobbin

Claims (1)

[Scope of utility model registration request] 1. A deflection yoke in which a back lid bobbin mounted on the tail side of the deflection yoke bobbin is formed separately from the deflection yoke bobbin, and a deflection magnetic field correction coil is disposed on the back lid bobbin. apparatus.