JPH06251711A - Adjustment of deflection yoke and device therefor - Google Patents

Abstract

PURPOSE:To provide a high grade deflection yoke of stable quality by automating operations. CONSTITUTION:A deflection yoke 11 is mounted on a standard color cathode-ray tube 22, and a fixed pattern is formed on a face surface 22a. A diameter direction position adjustment mechanism, a core rotational position adjustment mechanism, and a deflection yoke rotational position adjustment mechanism are operated so that the measured value of the fixed pattern measured by a sensor 39 becomes a desired value. The relationship between the rotational positions of diameter direction as well as along the outer periphery of a core 13 and that of a conical member 12 forming the deflection yoke 11, and between the deflection yoke 11 and the standard color cathode-ray tube 22, are adjusted. The relational data on the position of a ferrite sheet or a small magnetic piece and the movement of the electron beam of the standard color cathode-ray tube 22, as preliminarily measured, and the position where the ferrite sheet or the small magnetic piece are adhered, as determined by the result of the measurement, are displayed by a display device 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for adjusting a deflection yoke used in a color cathode ray tube or the like.

[0002]

2. Description of the Related Art Generally, a deflection yoke used in a color cathode ray tube is constructed as shown in FIGS. 6 and 7, for example. FIG. 6 shows a state in which the deflection yoke 11 is assembled, and is composed of a conical member 12 whose both ends are open and a core 13 which is mounted on the outer side of the conical member 12.

As shown in FIG. 7, a coil 14 is wound around the conical member 12, and a core 13 is vertically divided into two parts. The core members 13a and 13b of the cores 13 and 13 are divided into two parts. Each has a coil 15 wound around it. Then, the coil 14 is assembled so as to cover the wound conical member 12. The core members 13a and 13b are joined to each other by a pair of metal pieces 16 in a state of being combined with the outer circumference of the conical member 12.

To construct the deflection yoke 11 having such a structure so as to obtain predetermined characteristics, the conical member 12 and the core 13 are required.
And must be correctly set in a predetermined positional relationship.
That is, since the vertical positional relationship and the rotational positional relationship of the core members 13a and 13b with respect to the conical member 12 greatly affect the performance of the color CRT, it is necessary to adjust the positional relationship to the most desirable state.

Conventionally, the deflection yoke 11 is adjusted by mounting the conical member 12 and the core 13 on a standard color CRT, and the operator visually performs the following work.

First, the position of the core 13 in the diametrical direction, which is the vertical direction, is determined with respect to the conical member 12.

Next, the position in the rotational direction along the outer periphery of the core 13 with respect to the conical member 12 is determined. In this way, the conical member 12 and the core 13 are positioned and coupled to each other, and then the coupled deflection yoke 11 is rotated around the neck portion of the standard color cathode ray tube. After that, the ferrite sheet and small pieces of magnetic material having different shapes are attached near the inner and outer necks of the deflection yoke 11 so that desired characteristics can be obtained.

Here, the deflection yoke 11 depends on the precision of the components of the conical member 12 and the core 13 and the winding precision of the coils 14 and 15 wound around the conical member 12 and the core 13. Since the landing of the beam of the color cathode ray tube to which 11 is attached changes, it is necessary to take measures to correct the landing of this beam, and the series of adjustment work described above is important.

However, this series of adjustment work is extremely difficult, and it is difficult for an experienced operator to do so, and a great deal of adjustment time is required. For example, even for a skilled worker, only a few good deflection yokes can be manufactured in one hour for the adjustment work of the 35-inch deflection yoke. As described above, the adjustment work requires a lot of time, and the characteristics of the deflection yoke are likely to vary depending on the operator.
It is difficult to make a high-quality deflection yoke with stable quality.

[0010]

As described above, the conventional deflection yoke adjusting work relies on manual labor, and the work itself is very difficult, and the characteristics are likely to vary from worker to worker, and stable quality is high. There is a problem that it is difficult to make a quality deflection yoke.

An object of the present invention is to provide a deflection yoke adjusting method and an apparatus therefor which can eliminate a lot of manual work and can always obtain a high quality deflection yoke of stable quality by an automated work. Especially.

[0012]

A deflection yoke adjusting method according to claim 1, wherein a standard color cathode ray tube is fixed, and the standard color cathode ray tube is mounted on the neck portion of the standard color cathode ray tube and on the outer side of the conical member. A deflection yoke made of a core is attached, and a predetermined pattern signal is supplied from the TV power supply device to the standard color CRT to generate a predetermined pattern on the face surface of the standard color CRT,
The predetermined pattern is measured by a plurality of sensors arranged so as to face the face surface, and from the measurement result, the diameter direction of the core with respect to the conical member is adjusted so that the measured value of the predetermined pattern becomes a desired value. A position adjusting mechanism for adjusting the positional relationship in the rotational direction along the outer circumference and the positional relationship in the rotational direction along the outer circumference of the deflection yoke with respect to the standard color cathode-ray tube is controlled, and at least one of the ferrite sheet and the magnetic material piece measured in advance is controlled. The display device displays the attachment position of the ferrite sheet and the magnetic substance piece, which is obtained from the measurement result and the relational data between the one position and the movement of the electron beam of the standard color CRT.

A deflection yoke adjusting device according to a second aspect of the present invention is
A standard color cathode ray tube fixing device for fixing a standard color cathode ray tube, and a device main body having a deflection yoke attachment mechanism composed of a conical member and a core attached to the outside of the conical member with respect to the neck portion of the standard color cathode ray tube. , A diametrical position adjusting mechanism and a core rotational position adjusting mechanism that engage with the core and change the positional relationship of the core with respect to the conical member in the diametrical direction and in the rotational direction along the outer periphery, and engage with the deflection yoke. A deflection yoke rotation position adjusting mechanism for adjusting the positional relationship of the deflection yoke in the rotational direction with respect to the standard color cathode ray tube; and a predetermined pattern signal supplied to the standard color cathode ray tube so that a predetermined face signal is provided on the face surface of the standard color cathode ray tube. The TV power supply device that generates the pattern and the face power , A plurality of sensors for measuring the predetermined pattern displayed on the face surface, and the diametrical position adjusting mechanism and the core rotation so that the measured value of the predetermined pattern becomes a desired value from the measurement results of the plurality of sensors. Outputs a control command to the position adjustment mechanism and the deflection yoke rotation position adjustment mechanism, and at the same time stores the relationship data between the position of at least one of the ferrite sheet and the magnetic substance piece and the movement of the electron beam of the standard color cathode ray tube. And an arithmetic and control unit that calculates the attaching positions of the ferrite sheet and the magnetic piece from the measurement results, and a display device that displays the attaching positions of the ferrite sheet and the magnetic piece obtained by the arithmetic and control unit. It is equipped.

[0014]

According to the deflection yoke adjusting method of the present invention, the deflection yoke to be adjusted is attached to the standard color cathode ray tube, a predetermined pattern is generated on the standard color cathode ray tube, and the predetermined pattern is measured by a plurality of sensors. From this measurement result, the positional relationship between the conical member forming the deflection yoke in the diameter direction of the core and the rotation direction along the outer circumference and the deflection yoke for the standard color cathode-ray tube are adjusted so that the measurement value of the predetermined pattern becomes a desired value. Adjusting the rotational position relationship, the position of the ferrite sheet or magnetic piece that has been measured in advance and the position of the ferrite sheet or magnetic piece that can be found from the relationship data between the position of the standard color cathode ray tube electron beam movement and the measurement results. Is displayed, it is possible to always obtain a high-quality deflection yoke of stable quality.

A deflection yoke adjusting device according to a second aspect of the present invention is
A deflection yoke to be adjusted is attached to the standard color cathode ray tube, and a predetermined pattern is generated on the standard color cathode ray tube with the TV power supply device, and the predetermined pattern is measured by a plurality of sensors, and the measured value of the predetermined pattern becomes a desired value. As described above, the positional relationship in the diametrical direction and the rotational direction along the outer periphery of the core with respect to the conical member constituting the deflection yoke by the core rotational position adjusting mechanism and the deflection yoke rotational position adjusting mechanism and the deflection with respect to the standard color cathode ray tube are calculated. By adjusting the rotational position relationship of the yoke and displaying the attaching position of the ferrite sheet and the magnetic substance piece on the display device, it is possible to always obtain a high-quality deflection yoke of stable quality.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a deflection yoke adjusting device of the present invention will be described below with reference to the drawings.

First, in FIG. 1, reference numeral 21 denotes an apparatus main body, and the apparatus main body 21 has a standard color CRT fixing device 23 for holding a standard color CRT 22 at a lug portion and fixing it in a predetermined state. The standard color cathode-ray tube 22 is equipped with a purity convergence magnet 24 and a socket 25. A deflection yoke 11 to be adjusted is attached to the neck portion of the standard color CRT 22. As shown in FIGS. 6 and 7, the deflection yoke 11 comprises a conical member 12 and a core 13 mounted on the outer side of the conical member 12. The deflection yoke 11 is divided into two core members 13a, 13b is a pair of metal pieces
16 are connected to each other.

A mounting mechanism 27 for mounting the deflection yoke 11 on the neck portion of the standard color cathode-ray tube 22 is provided on the apparatus main body 21. This attachment mechanism 27 is a deflection yoke.
A movable part 28 for supporting the movable part 28 and a moving mechanism part 29 for moving the movable part 28 and the deflection yoke 11 supported by the movable part 28 in the lateral direction, that is, along the tube axis direction of the standard color CRT 22. Have.

Three pulse motors 31, 32, 33 are provided on the mounting mechanism 27. The pulse motor 31 operates the diametrical position adjusting mechanism 34 shown in FIG. 4 to move the core 13 relative to the conical member 12 in the vertical direction as indicated by the arrow M1 in FIG. To adjust its position in the diametrical direction. Further, the pulse motor 32 operates the core rotation position adjusting mechanism 35 shown in FIG. 4 to move the core 13 along the outer periphery of the conical member 12 with respect to the conical member 12 as shown by an arrow M2 in FIG. Drive in the direction of rotation to adjust the rotational position. Further, the pulse motor 33 operates the deflection yoke rotation position adjusting mechanism 36 shown in FIG.
As indicated by M3, the entire deflection yoke 11 is rotated with respect to the standard color CRT 22 around the neck of the standard color CRT 22 to adjust the rotational position.

Reference numeral 37 denotes a television power supply device which supplies a predetermined pattern signal to the standard color CRT 22 to generate a predetermined pattern, that is, a crosshatch pattern, on the face surface 22a of the standard color CRT 22. Further, 38 is a measuring device, and this measuring device 38 measures a predetermined crosshatch pattern displayed on the face surface 22a by a plurality of sensors 39 arranged facing the face surface 22a of the standard color CRT 22. . A CCD camera is used as each of the plurality of sensors 39, and the sensor 39 composed of these CCD cameras is held by a sensor holding device 40, and is attached to the face surface 22a as shown in FIG.
As shown by, the nine sensors 39 are evenly arranged.

Further, 41 is an arithmetic and control unit, which controls the operation / stop of the television power supply unit 37, and inputs the measurement results from a plurality of sensors 39 from the measuring unit 38 to obtain a predetermined crosshatch. Control commands to the three pulse motors 31, 32, 33 corresponding to the diameter direction position adjusting mechanism 34, the core rotation position adjusting mechanism 35, and the deflection yoke rotation position adjusting mechanism 36 so that the measured value of the pattern becomes a desired value. Is output. Further, the arithmetic and control unit 41 stores in advance the relational data between the position of a ferrite sheet or a magnetic piece (not shown) and the movement of the electron beam of the standard color cathode ray tube 22. The pasting position is obtained, and the pasting position is displayed on the display device 42.

Next, each adjusting mechanism constructed on the mounting mechanism 27 will be described with reference to FIGS. 3, 4 and 5.

3 and 5, the mounting mechanism 27 is
It has a moving mechanism part 29 provided on the device main body 21 and a movable part 28 combined with this moving mechanism part 29. The movable part 28 is integrally formed with a plate-shaped bracket 45 vertically erected. Have. Further, behind the bracket 45, as shown in FIG.
47 are integrally provided, and three pulse motors 31, 32, 33 are attached by the motor attachment plate 47.
Further, the support bracket 46 is provided with a neck positioning device 48 for the standard color cathode ray tube 22.

Next, the deflection yoke rotational position adjusting mechanism 36 will be described with reference to FIG. 51 is a rotating plate, this rotating plate 51
Are arranged on the back surface of the bracket 45, as shown in FIG. The rotary plate 51 is a vertically long one having a bifurcated upper part and has a fan-shaped opening 52 as shown in FIG.
However, by engaging the four rollers 53 provided rearward on the upper back surface of the bracket 45, the bracket 45 is rotatably supported by the bracket 45. That is,
The opening 52 is an arc-shaped edge 52 centered on a central point O1 located above and corresponding to the center of the standard color CRT 22.
Since the edges 52a and 52b are engaged with the roller 53, the rotary plate 51 is rotatably supported by the bracket 45 around the center point O1.

The upper portion of the rotary plate 51 is formed in a bifurcated shape, and the pair of bifurcated support portions 51a and 51b have a pair of holding mechanisms 55a for the conical member 12 constituting the deflection yoke 11. 55b is attached so as to be movable along the horizontal direction in the drawing. Claws 56a, 56b that engage with a groove portion (not shown) formed in the conical member 12 are provided at portions of the pair of holding mechanisms 55a, 55b that face each other.

Further, the pair of holding mechanisms 55a and 55b are engaged with corresponding ones of the upper ends of the pair of levers 57a and 57b. The intermediate portion of the pair of levers 57a and 57b is the support shaft 58.
The corresponding ones of a and 58b are rotatably supported on the rotary plate 51, and the other ends thereof are slidably connected to each other. Therefore, when the handle 59 attached to one lever 57a is operated in the direction of the arrow a, the pair of levers 57a and 57b and the pair of levers 5a and 57b are operated.
A pair of holding mechanisms 55a, 5 connected to the upper ends of 7a, 57b
5b is opened and closed in conjunction with each other.

Further, one end of a connecting rod 62 is connected to the upper right side of the rotary plate 51 via a connecting bracket 61. The other end of the connecting rod 62 is connected to the tip of a rack gear 64 of a transmission device 63 provided on the lower left side of the bracket 45.
The rack gear 64 meshes with the pinion gear 66 shown in FIG. 3, which is rotationally driven by the pulse motor 33 shown in FIG.

Therefore, the arithmetic and control unit 41 shown in FIG.
When the pulse motor 33 is rotationally driven by the command of, the rotational force is transmitted to the pinion gear 66 via the coupling device 65,
After being converted to linear motion by the rack gear 64, the connecting rod 62
And transmitted to the rotary plate 51 via the connecting bracket 61, and the rotary plate 51 and the pair of holding mechanisms are attached to the rotary plate 51.
The entire deflection yoke 11 including the conical member 12 engaged via 55a and 55b is rotated by an angle corresponding to the rotation amount of the pulse motor 33.

Next, focusing on FIG. 4, the conical member of the core 13
A diametrical position adjusting mechanism 34 and a core rotational position adjusting mechanism 35 that change the positional relationship in the diametrical direction with respect to 12 and in the rotational direction along the outer periphery will be described. The diametrical position adjusting mechanism 34 and the core rotational position adjusting mechanism 35 are respectively arranged on the back side of the rotary plate 51 shown in FIG.

First, the diametrical position adjusting mechanism 34 holds the core 13 and adjusts its position in the vertical direction, which is the diametrical direction thereof. As shown in FIG. 4, the movable plate 71 is formed in a substantially Y shape. Have. The movable plate 71 is vertically guided by the guide rollers 72 engaging with the both side edges 71a and 71b.
The guide roller 72 is provided on the back surface of the rotary plate 51, and thus the movable plate 71 is supported on the back surface of the rotary plate 51 so as to be vertically movable.

Further, the lower end 71c of the movable plate 71 is connected to the tip on the short side of the L-shaped link 73 for vertically driving. This L
The bent portion of the shaped link 73 is rotatably supported by the support shaft 74 on the back side of the rotary plate 51, and the lower end is horizontally attached to the lower right side of the rotary plate 51 shown in FIG. It is connected to the left end of the rack gear 76 of the transmission device 75 via a connecting part 76a. The rack gear 76 is rotationally driven by the pulse motor 31 shown in FIG.
It meshes with the pinion gear 78 shown in. Therefore, the rotational force of the pulse motor 31 is transmitted to the pinion gear 78 via the coupling device 77 and converted into a linear direction by the rack gear 76, and then the L-shaped link 73 is rotated about the support shaft 74, and the L-shaped link 73 is rotated. By operating the short side of the link 73 in the direction indicated by the arrow b, the movable plate 71 is driven in the vertical direction. 79
The stopper 79 limits the rotation in the counterclockwise direction, that is, the rotation in the direction of lowering the movable plate 71 to a predetermined range by contacting the right side of the long side portion of the L-shaped link 73.

Further, on the circumference of the upper part of the movable plate 71 with the center point O1 as the center, three rollers 80 are arranged at equal intervals, and a ring 81 is rotatably supported by these rollers 80. To be done. Further, a bracket 82 is integrally attached to the lower center of the ring 81.
The middle part of the screw rod 83 along the horizontal direction is rotatably supported by 82. A knob-shaped handle 84 is integrally attached to the right end of the screw rod 83. Further, the screw rod 83 has different left and right screw directions with the middle part supported by the bracket 82 as a boundary. For example, a left threaded portion 83a is formed on the left side, and a right threaded portion 83b is formed on the right side. And these left-hand threaded portions 83a,
The right threaded portion 83b is screwed with corresponding ones of the lower ends of the pair of levers 85a and 85b.

The intermediate portions of the pair of levers 85a and 85b are rotatably supported at the symmetrical positions below the ring 81 via the corresponding ones of the support shafts 86a and 86b.
Further, the upper ends of the pair of levers 85a and 85b are provided with corresponding ones of the claw-shaped engagement holding portions 87a and 87b, respectively. These claw-shaped engagement holding portions 87a and 87b are
The core 13 as a whole is held by engaging with the metal piece 16 for connecting the core members 13a and 13b of the core 13 shown in FIGS. 6 and 7.

Here, since the lower ends of the pair of levers 85a and 85b are respectively screwed with the left screw portion 83a and the right screw portion 83b having different screw directions, By rotating the screw rod 83 with the handle 84, the screw rods 83 rotate in opposite directions about the support shafts 86a and 86b, respectively, and the pair of engagement holding portions 87a and 87b attached to the upper ends are opened and closed. Then, when the pair of engagement holding portions 87a and 87b are closed and the entire core 13 is held, when the movable plate 71 is driven in the vertical direction via the transmission device 75 by the rotation of the pulse motor 31, the movable plate 71 moves. On the plate 71, the ring 81 and the pair of engagement holding portions 87a, 87b are provided.
The position of the core 13 held by is changed in the vertical direction, which is the diametrical direction.

An arm 89 extending rightward is integrally attached to the lower portion of the bracket 82, and together with a connecting rod 90 connected to the right end of the arm 89, a core rotational position adjusting mechanism 35.
Make up. The lower end of the connecting rod 90 is connected to one end of a rack gear 92 of a transmission device 91 attached to the lower right of the rotary plate 51 in FIG. This rack gear 92
Engages with the pinion gear 94 shown in FIG. 3, which is rotationally driven by the pulse motor 32 shown in FIG. Therefore, the rotational force of the pulse motor 32 is transmitted to the pinion gear 94 via the coupling device 93, and the rack gear 92
After being converted into a linear direction by means of the connecting rod 90, it is transmitted to the ring 81 via the arm 89 and the bracket 82 shown in FIG. 4, and the pair of levers 85a and 85b and the pair of engaging and holding portions are connected to the ring 81. The core 13 held via 87a and 87b is rotated.

Next, the operation of the above embodiment will be described.

First, when adjusting the deflection yoke 11, first, the standard color cathode ray tube 22 is fixed on the main body 21 of the apparatus in a predetermined positional relationship. That is, as shown in FIGS. 1 and 5, the standard color cathode ray tube fixing device 23 holds the lug portion of the standard color cathode ray tube 22, and the neck portion is supported by the neck portion positioning device 48 shown in FIG. It is fixed in the prescribed state. The standard color cathode-ray tube 22 is equipped with a purity convergence magnet 24 and a socket 25.

Next, on the right side of the positions shown in FIGS. 1 and 5,
Mounting mechanism that is off the standard color CRT 22
The deflection yoke 11 to be adjusted is mounted on the 27. In this case, first, the handle 59 shown in FIG. 3 is operated in the direction of arrow a to open the pair of holding mechanisms 55a and 55b, and the knob-shaped handle 84 shown in FIG. The joint holding portions 87a and 87b are also opened.

In this state, the deflection yoke 11 is attached,
The handle 59 of FIG. 3 is operated in the direction opposite to the arrow a to close the pair of holding mechanisms 55a and 55b, and the claws 56a and 56b are engaged with the groove portion (not shown) of the conical member 12 constituting the deflection yoke 11. . Further, the knob-shaped handle 84 shown in FIG. 4 is rotated in the opposite direction to close the pair of engagement holding portions 87a and 87b, and the core member of the core 13 shown in FIGS.
The metal piece 16 for connecting 13a and 13b is engaged.

When the mounting of the deflection yoke 11 on the mounting mechanism 27 is completed in this way, the mounting mechanism 27 is shown in the left side by combining the moving mechanism section 29 and the movable section 28 shown in FIGS. Then, the deflection yoke 11 is combined with the standard color cathode ray tube 22 in a predetermined positional relationship.

Next, the television power supply unit 37 is operated by the arithmetic and control unit 41 shown in FIG.
A predetermined crosshatch pattern is generated on the face surface 22a. Further, a plurality of sensors 39 such as CCD cameras are arranged to face the face surface 22a so as to face each other in the arrangement relationship shown in FIG. 2, and the measuring device 38 measures a cross hatch pattern by signals from these sensors 39. To do. Further, the arithmetic and control unit 41, a measurement signal from the measuring unit 38,
Each position adjusting mechanism 34, so that the measurement signal from the measuring device 38 has a predetermined value by comparing with a preset measurement value.
Outputs operation commands to the pulse motors 31, 32 and 33 for 35 and 36.

When the pulse motor 31 operates, the diametrical position adjusting mechanism is operated via the transmission device 75 shown in FIG.
The movable plate 71, which is the main body of 34, moves in the vertical direction, and the core held by the pair of engagement holding portions 87a and 87b on the movable plate 71.
The 13 is displaced in the vertical direction independently of the conical member 12. That is, according to the rotation direction and rotation amount of the pulse motor 31, as shown by an arrow M1 in FIG. 1, the position adjustment of the core 13 in the vertical direction, which is the diametrical direction with respect to the conical member 12, is performed.

Further, when the pulse motor 32 operates, FIG.
The ring 81 is rotated by the transmission device 91 and the connecting rod 90 shown in FIG. 4 via the arm 89 and the bracket 82 shown in FIG. Because of this, the ring
The core 13 held by the pair of levers 85a and 85b supported by 81 and the engagement holding portions 87a and 87b at the tips of these levers 85a and 85b is independent of the conical member 12 and extends along the outer peripheral direction thereof. Rotate. That is, according to the rotation direction and the rotation amount of the pulse motor 32, the position of the core 13 in the rotation direction with respect to the conical member 12 is adjusted as shown by the arrow M2 in FIG.

Further, when the pulse motor 33 rotates, the rotary plate 51, which is the main body of the deflection yoke rotation position adjusting mechanism 36, is moved through the transmission device 63 and the connecting rod 62 shown in FIG.
Rotate around. Therefore, the conical member 12 held by the pair of holding mechanisms 55a and 55b attached to the rotary plate 51 also rotates in the same direction. Further, since the diametrical position adjusting mechanism 34 and the core rotational position adjusting mechanism 35 are respectively formed on the rotary plate 51, the held core 13 also rotates in the same direction. That is, according to the rotation direction and the rotation amount of the pulse motor 33, both the conical member 12 and the core 13 and the entire deflection yoke 11 rotate as shown by an arrow M3 in FIG.
Position adjustment of the entire rotation direction is performed.

After this adjustment, the arithmetic and control unit 41 uses the measuring unit.
The measurement signal from 38 is input again, and measurement and adjustment based on the result are executed in real time until a predetermined measurement value is reached. As described above, the pulse motors 31 and 32 displace the core 13 in the diametrical direction and the rotational direction with respect to the conical member 12 to adjust the position, and the pulse motor 33 shifts the entire deflection yoke 11 to the standard color CRT 22. The rotation is performed with respect to each other to adjust the position in the rotation direction.In these processes, the arithmetic and control unit 41 uses a ferrite sheet (not shown) or a small piece of a magnetic material having a different shape, inside the conical member 12, or , The position near the outer neck is displayed on the display device 42.

The display is performed as follows. First, the pre-measured data on the attachment position of the ferrite sheet and the magnetic pieces of different shapes and the movement of the electron beam of the standard color cathode ray tube 22 when the ferrite sheet and the small pieces of magnetic material of different shapes were attached. And are stored in the arithmetic and control unit 41. Then, by comparing this data with the measurement result by the measuring device 38, the sticking position of the ferrite sheet or the small piece of magnetic material having a different shape is determined and displayed on the display device 42.

In this way, the display device 42 displays where to attach the ferrite sheet or the small pieces of magnetic material having different shapes.
Anyone can easily adjust the deflection yoke 11. It should be noted that the work of attaching the ferrite sheet or the magnetic material having a different shape is performed with the attachment mechanism 27 having the deflection yoke 11 attached thereto being removed from the standard color CRT 22. After repeating this operation several times, finally, the conical member 12 and the core 13 are fixed to each other with a resin or the like, whereby the deflection yoke 11
Is completed.

[0048]

According to the deflection yoke adjusting method of the first aspect of the present invention, the deflection yoke to be adjusted is attached to the standard color cathode ray tube, a predetermined pattern is generated on the standard color cathode ray tube, and the predetermined pattern is detected by a plurality of sensors. The positional relationship in the diametrical direction and the rotational direction along the outer periphery of the core with respect to the conical member forming the deflection yoke and the rotational positional relationship of the deflection yoke with respect to the standard color cathode-ray tube so that the measured value of the predetermined pattern becomes a desired value. Since the positions where the ferrite sheet and the small magnetic pieces are attached are displayed by adjusting and, it is possible to always obtain a high-quality deflection yoke of stable quality without causing variations in characteristics depending on the operator.

The deflection yoke adjusting device according to claim 2 is
A deflection yoke to be adjusted is attached to the standard color cathode ray tube, and a predetermined pattern is generated on the standard color cathode ray tube with the TV power supply device, and the predetermined pattern is measured by a plurality of sensors, and the measured value of the predetermined pattern becomes a desired value. As described above, the positional relationship in the diametrical direction and the rotational direction along the outer periphery of the core with respect to the conical member constituting the deflection yoke by the core rotational position adjusting mechanism and the deflection yoke rotational position adjusting mechanism and the deflection with respect to the standard color cathode ray tube are calculated. By adjusting the rotational position of the yoke and displaying the attachment position of the ferrite sheet and the small magnetic pieces on the display device, there is no variation in characteristics due to the operator, and a high-quality deflection yoke with stable quality is always available. Can be obtained.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of a deflection yoke adjusting device of the present invention.

FIG. 2 is a front view illustrating an arrangement state of a plurality of sensors of the same.

3 is a left side view of a mounting mechanism of the deflection yoke adjusting device of FIG.

FIG. 4 is a rear view of FIG.

5 is a plan view showing a state in which the portion below the center line O is the right side surface of FIG. 3, and the portion above the center line O is the left half of FIG. 3 seen from above.

FIG. 6 is a perspective view showing a deflection yoke to be adjusted in the above.

FIG. 7 is an exploded perspective view of the above deflection yoke.

[Explanation of symbols]

 11 Deflection yoke 12 Conical member 13 Core 21 Device body 22 Standard color cathode ray tube 22a Face surface 23 Standard color cathode ray tube fixing device 34 Diameter position adjustment mechanism 35 Core rotation position adjustment mechanism 36 Deflection yoke rotation position adjustment mechanism 37 Television power supply device 39 Sensor 41 Arithmetic control device 42 Display device

Claims (2)

[Claims] 1. A standard color cathode ray tube is fixed, a deflection yoke comprising a conical member and a core mounted outside the conical member is attached to a neck portion of the standard color cathode ray tube, and the standard color cathode ray tube has a television power source. A predetermined pattern signal is supplied from the device to generate a predetermined pattern on the face surface of the standard color cathode ray tube, the predetermined pattern is measured by a plurality of sensors arranged facing the face surface, and from this measurement result, A positional relationship in the rotational direction along the diametrical direction and the outer circumference of the core with respect to the conical member and a positional relationship in the rotational direction along the outer circumference of the deflection yoke with respect to the standard color CRT so that the measured value of the predetermined pattern becomes a desired value. By controlling the position adjustment mechanism that adjusts the Deflection characterized by causing a display device to display the attachment position of the ferrite sheet and the magnetic piece obtained from the relational data between at least one of the positions and the movement of the electron beam of the standard color CRT and the measurement result. How to adjust the yoke. 2. A standard color cathode ray tube fixing device for fixing a standard color cathode ray tube, and an attachment mechanism for a deflection yoke comprising a conical member and a core attached to the outside of the conical member, with respect to a neck portion of the standard color cathode ray tube. An apparatus main body having: a diametrical position adjusting mechanism and a core rotational position adjusting mechanism that engage with the core and change a positional relationship of the core in a diametrical direction with respect to the conical member and a rotational direction along an outer periphery; A deflection yoke rotation position adjusting mechanism that engages with the yoke and adjusts the positional relationship of the deflection yoke in the rotation direction with respect to the standard color CRT, and supplies a predetermined pattern signal to the standard color CRT to supply the standard color CRT. A power supply device for generating a predetermined pattern on the face surface of the A plurality of sensors arranged facing each other to measure the predetermined pattern displayed on the face surface, and the diametrical position so that the measured value of the predetermined pattern becomes a desired value from the measurement results of the plurality of sensors. The control command is output to the adjusting mechanism, the core rotation position adjusting mechanism, and the deflection yoke rotation position adjusting mechanism, and at least one of the ferrite sheet and the magnetic material piece stored in advance and the electron beam of the standard color CRT. An arithmetic and control unit that calculates the attaching positions of the ferrite sheet and the magnetic piece from the relational data with the movement and the measurement result, and the attaching positions of the ferrite sheet and the magnetic piece obtained by the arithmetic and control unit are displayed. A deflection yoke adjusting device, comprising: