JPH11185664A - Deflection yoke - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deflection yoke of good quality in which a coma coil of divided winding to cause reduction of productivity in mass-production by an increase of man-hours of wiring work and direct material cost increase by increase of numbers of parts such as terminals used in a connection point of the coma coil lead wire, is not used, but a coma coil of connected winding is used to enhance productivity in mass-production by reducing man-hours of winding work and to prevent disconnection of the coma coil lead wire. SOLUTION: A sagging preventive lib 1 is placed in a wiring guide wall 2 of an insulating frame 3 and positioning of a coma coil lead wire 6 connecting an upper side coma coil 4 in the picture and a lower side coma coil in the picture in a coma coil of connected winding, is regulated by the sagging preventive lib 1 in this deflection yoke, and quality of the deflection yoke is not deteriorated by using the coma coil of connected winding, and a man-hour for winding work is reduced to enhance productivity in mass-production.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke installed in a cathode ray tube of a television receiver or the like, and more particularly, to a deflection yoke having convergence correction or frame correction means.

[0002]

2. Description of the Related Art Generally, a deflection yoke includes a coma coil for convergence correction or frame correction. Hereinafter, the configuration of this type of conventional deflection yoke will be described with reference to FIGS.
This will be described with reference to FIGS.

FIGS. 5 and 6 show a conventional deflecting yoke having a connected winding coma coil for convergence correction or coma correction, and a connecting wound coma coil lead wire 6 connecting the upper screen coil 4 and the lower screen coil 5 of the screen. Is shown.

As shown in FIG. 6, after the top coil 4 of the deflection yoke having the connected winding top coil for convergence correction or top correction is wound on the top coil 4 of the screen, necessary lead wires are secured. Further, wiring to the lower screen coil 5 is performed, and the upper screen coil 4 and the lower screen coil 5 are attached to the insulating frame 3. A coma coil lead wire 6 including a lead wire between the screen upper coma coil 4 and the screen lower coma coil 5 is placed in the wiring guide wall 2 to prevent the disconnection.
Reference numeral 11 in the figure denotes a terminal used as a connection point of the coma coil lead wire 6.

FIGS. 7 and 8 show a conventional deflection yoke having a divided winding coma coil for convergence correction or coma correction, in which a coma coil lead wire 6 for connecting an upper coma coil 9 on the screen and a lower coma coil 10 on the screen. Is shown.

[0006]

In the above-mentioned conventional connected winding coil for performing convergence correction or frame correction, the top coil coil 4 is connected to the top coil coil 4 on the screen.
The position must be regulated between two points of the lead wire outlet 7 and the lead wire outlet 8 of the lower frame coil 5 of the screen. From the guide wall 2
The coil coil lead wire 6 does not reach, or the top coil lead wire 6 is broken at the time of wiring, so that the number of man-hours for winding the top coil increases, resulting in a slight decrease in mass productivity.

Further, in the case of the divided winding coma coil for performing the convergence correction or the coma correction, it is not necessary to remarkably reduce the dimensional tolerance of the length of the coma coil lead wire 6 unlike the above-mentioned connected winding coma coil. Although the man-hour can be reduced, the coma coil lead wire 6
Increases the number of connection points, which leads to an increase in man-hours for wiring work and a decrease in mass productivity, and an increase in the number of parts such as the terminals 11 used as connection points for the coma coil lead wires 6, leading to an increase in direct material costs. .

[0008] However, when comparing the connection-wound top coil and the split-wound top coil, although the number of winding operations is increased, the split-wound top coil is often used because of its superior quality in preventing disconnection of the top coil lead wire 6. Was.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and causes a reduction in mass productivity due to an increase in the number of wiring work steps, and an increase in direct material costs due to an increase in the number of components such as terminals used for connection points of the coma coil lead wires. Instead of using a split winding coil, a connecting winding coil is used, and it is possible to improve the mass productivity by reducing the number of winding work steps and to provide a high quality deflection yoke which can prevent breakage of the coil coil lead wire. Aim.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a connecting coil coil for performing convergence correction or frame correction, and has a wiring guide wall provided on an insulating frame and a wiring guide. A deflection yoke having a configuration in which a slack preventing rib is disposed in a wall, and a position of the coma coil lead wire connecting the upper screen coil and the lower screen coil is held and regulated by the slack preventing rib.

According to the present invention, the deflection preventing yoke disposed on the wiring guide wall of the insulating frame prevents the sagging of the coma coil lead wire between the upper screen coil and the lower screen coil and regulates the position thereof. As a result, it is possible to improve the mass productivity by reducing the number of man-hours for winding work without lowering the quality.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention has a connected coil coil for performing convergence correction or frame correction, and has a slack preventing rib disposed in a wiring guide wall of an insulating frame. The deflection yoke is a deflection yoke in which the top coil coil connecting the screen upper coma coil and the screen lower coma coil is restricted in position by the sag preventing rib, which prevents slack of the coma coil lead and eliminates disconnection thereof.
This has the effect of reducing the number of man-hours for winding and improving mass productivity.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a cross-sectional view and a perspective view of a main part of a deflection yoke according to a first embodiment of the present invention, showing a position control means of a coma coil lead wire. FIG. 2 is a front view of the deflection yoke. 3 is a circuit diagram of a divided winding coma coil in the deflection yoke, FIG.
FIG. 3 is a circuit diagram of a connection-wound coma coil in a deflection yoke. The same components as those of the conventional example are denoted by the same reference numerals as those of the conventional example.

As shown in FIGS. 1 and 2, the deflection yoke has a convergence-corrected or frame-corrected connected winding coil, and its insulating frame portion has a wiring guide wall 2 and a wiring guide wall. 2, a slack preventing rib 1 is arranged. The top coil coil 4 connecting the upper coil 4 on the screen and the lower coil 5 on the screen is connected by the slack prevention rib 1 to regulate the position.

[0015] With this configuration, even in the connection-wound coma coil, the coma coil lead wire 6 is connected to the upper coma coil 4 on the screen.
The position between the lead wire outlet 7 and the lead wire outlet 8 of the screen lower coma coil 5 can be reliably regulated.

Therefore, in order to prevent breakage of the top coil 4 including the lead between the top coil 4 and the bottom coil 5 as in the prior art, the dimensional tolerance of the length of the top coil 6 is remarkably increased. There is no need to reduce the size, which leads to a reduction in the number of work steps for winding the top coil, thereby improving mass productivity.

Further, the number of connection points of the top coil coil leads 6 is large, so that it is not necessary to use divided winding top coils which are disadvantageous in the number of wiring steps and the number of components such as the terminals 11 used as connection points of the top coil coils 6.

That is, as shown in FIG. 3, the circuit of the divided winding coma coil employs a 4-pole coma coil 12 for convergence correction and a 2-pole coma coil 13 for coma correction, and is connected as shown in FIG. The circuit of the wound coma coil employs a 4-pole coma coil 14 for convergence correction and a 2-pole coma coil 15 for frame correction.

In the split-wound coma coil shown in FIG. 3, the number of connection points 16 of the coma coil is seven, and the number of lead wires for winding the coma coil is twelve. In the connection-wound coma coil shown in FIG. 4, the connection point 17 of the coma coil is four. Yes, the number of lead wires for winding the top coil is six.

As is apparent from this, the connection-wound top coil is advantageous in the number of wiring steps and the number of components such as terminals used for connecting points of top coils.

Conventionally, a split-wound coa coil which causes a remarkable decrease in mass productivity due to a remarkable increase in man-hours for wiring the deflection yoke and an increase in direct material cost due to an increase in the number of components such as terminals used for connection points of the coma coil lead wire. Has been used because of its superiority in quality, that is, prevention of disconnection of the coma coil lead wire. However, in the first embodiment of the present invention, the connecting coil coil is used, and the coma coil between the upper coil on the screen and the lower coil on the screen is used. Since the position of the lead wire is regulated by the slack prevention rib, mass production is improved by reducing the number of man-hours for winding and wiring, and the cost of direct materials is reduced by reducing the number of components such as terminals used for coil lead wire connection points. The quality can be improved by preventing disconnection of the coil lead wire.

[0022]

As is clear from the above description, according to the present invention, mass productivity is reduced due to a remarkable increase in the number of wiring work steps for the deflection yoke, and the number of components such as terminals used as connection points of the coma coil lead wires is reduced. Instead of using split-wound coma coils, which increase the cost of direct materials due to the increase, the use of linked-wound coma coils has the advantageous effects of improving mass productivity by reducing the number of man-hours for winding and improving quality by preventing breakage of the coma coil lead wires. can get.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing a position restricting means of a coma coil lead wire of a deflection yoke according to a first embodiment of the present invention. FIG.

FIG. 2 is a front view of the deflection yoke.

FIG. 3 is a circuit diagram of a divided winding coma coil in a deflection yoke.

FIG. 4 is a circuit diagram of a connection-wound coma coil in a deflection yoke.

FIG. 5 is a cross-sectional view showing lead wire wiring of a connected winding coma coil in a conventional deflection yoke.

FIG. 6 is an external view showing lead wire wiring of a connection-wound coma coil in a conventional deflection yoke.

FIG. 7 is a cross-sectional view showing lead wire wiring of a divided winding coma coil in a conventional deflection yoke.

FIG. 8 is an external view showing lead wire wiring of a divided winding coma coil in a conventional deflection yoke.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slack prevention rib 2 Wiring guide wall 3 Insulating frame 4 Screen upper frame coil 5 Screen lower frame coil 6 Frame coil lead wire 7 Lead wire outlet 8 Lead wire outlet 11 Terminal 12 4 pole coma coil 13 2 pole coma coil 14 4 pole coma coil 15 2-pole top coil 16 Connection point of top coil 17 Connection point of top coil

Claims (1)

[Claims] 1. A frame coil having a connection winding for performing convergence correction or frame correction, a slack preventing rib is disposed in a wiring guide wall of an insulating frame, and an upper frame coil and a lower frame coil are arranged by the slack preventing rib. A deflection yoke characterized by restricting the position of a coma coil lead wire to be connected.