JPH09129136A - Power feeding method to cathode-ray tube and power feeding device for it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely connect the terminal pins of the neck section of a cathode-ray tube and a power socket in the power feeding method to the cathode-ray tube for the adjustment of a deflection yoke or other various inspections. SOLUTION: In the power feeding method to the terminal pins of an electron gun guided from the neck section 1N of a cathode-ray tube 1, the cathode-ray tube 1 is supported by three fitting sections of an explosion-proof band, and a power socket 39 and a neck guide section 40 are fitted to a floating plate 38. A power feed section having a stopper section 46 correcting the floating plate 38 in contact with the floating plate 38 is moved, the position of the power socket 39 is matched with the terminal pins 50 of the neck section 1N by the floating plate 38, and the power socket 38 is inserted into the terminal pins 50 for feeding power.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supplying power to a cathode ray tube for supplying power to a terminal pin led out from a neck portion when adjusting a deflection yoke of a cathode ray tube or for various inspections, and to use the same. Power supply device.

[0002]

2. Description of the Related Art In a cathode ray tube, when a deflection yoke is adjusted or various inspections are carried out, it is carried out in a state where a screen is illuminated. At that time, power is supplied to the electron gun of the cathode ray tube by an automatic machine by inserting a power socket into the terminal pin led out from the neck portion.

Conventionally, the power supply to the electron gun of such a cathode ray tube has been performed as shown in FIGS. 7 and 8.
That is, the cathode ray tube 1 supports the two mounting portions 3A and 3B of the mounting portions 3 of the explosion-proof band 2 on the pair of first supporting members 4 [4a, 4b] and also the funnel portion 1F.
A pair of second support parts 5 [5a,
5b], and the neck portion 1N is supported on the pallet 7 so as to be oriented laterally.

In this state, a power supply unit 13 in which a socket (that is, a power supply socket) 11 connected to the power supply 10 and a neck guide unit 12 for guiding the neck unit 1N are integrally formed.
Is moved to guide the neck portion 1N of the cathode ray tube 1 by the neck guide portion 12, and the terminal pin 8 led out to the neck portion 1N is inserted into the socket 11 to supply power.

[0005]

Conventionally, as described above, the cathode ray tube 1 on the pallet 2 supports the first supporting member 4 [4a, 4b] for supporting two points of the mounting portion 3 and the funnel portion. Since it was fixed by the second support member 5 [5a, 5b] that receives 1F, the neck portion 1N of the cathode ray tube 1 is more likely to be inclined than horizontal, and even if the socket 11 is inserted with reference to the neck portion 1N, it is good. There was a case where the power supply socket 11 and the terminal pin 8 were not connected to each other and a connection error occurred.

If the connection is mistaken, the terminal pin 8 is bent, and it takes time to deal with it. In addition, since the connection between the terminal pin 8 and the power socket 11 is not reliably performed, it is often the case that an operator applies force from the outside to supplement.

Further, as shown in FIG. 9, depending on the cathode ray tube 1, a coil for correcting the deviation between the electron gun axis and the tube axis, that is, a so-called gun center coil 14 is attached to the neck portion 1N. However, in the cathode ray tube 1 of such a tube type, it was not possible to automatically insert the power supply socket 11 integrated with the neck guide portion 12 described above.

In view of the above-mentioned problems, the present invention provides a method of supplying power to a cathode ray tube and a power supply used for the same, which is capable of easily and surely automatically inserting a power socket into a terminal pin of the cathode ray tube to supply power. A device is provided.

[0009]

A method of supplying power to a cathode ray tube according to the present invention is to support the cathode ray tube by an attachment portion of an explosion-proof band, attach at least a power socket to a floating plate, and contact the floating plate. Move the power supply unit that has a stopper that corrects the posture of the floating plate, and insert the power socket into the terminal pin so that the position of the power socket is aligned with the neck of the cathode ray tube by the floating plate to supply power. .

In this cathode ray tube power supply method,
Since the power supply socket of the power supply unit is in a floating state in which it can move freely, when the power supply unit is moved, the position of the power socket is aligned with the neck part by the floating plate, and the power socket can be easily attached to the neck part. It is inserted into the terminal pin. Therefore, the power is reliably supplied to the terminal pins.

In the power supply device according to the present invention, at least the power socket is attached to the cathode ray tube positioning means for supporting the cathode ray tube by the attachment portion of the explosion-proof band and the floating plate having the opening through which the neck portion penetrates. It comprises a power supply part provided with a stopper part which abuts the floating plate to correct the posture of the floating plate, and means for moving the power supply part with respect to the cathode ray tube positioned by the positioning means.

In this power supply device, when the power supply part is moved with respect to the neck part of the cathode ray tube supported by the positioning means, the power supply socket is in a floating state in which it can move freely. The position is easily aligned with the neck and the terminal pins of the neck are inserted into the power socket. When the terminal pin catches in the middle of the power socket, the floating plate comes into contact with the stopper to correct the posture of the floating plate, and thus the posture of the power socket, and the stopper pin pushes the terminal pin to the power source. It is securely inserted in the socket. Therefore, automatic power supply can be performed easily and reliably.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is a method for supplying power to a terminal pin led out from a neck portion of a cathode ray tube, in which the cathode ray tube is supported by mounting portions of an explosion-proof band, for example, three mounting portions thereof. For example, attach at least the power socket to the floating plate that is held by a spring, move the power supply unit that has a stopper that abuts the floating plate and corrects the posture of the floating plate, and move the position of the power socket by the floating plate. Power is supplied by inserting the power socket into the terminal pin according to the terminal pin on the neck.

According to the present invention, in the above-mentioned power supply method, the neck guide is further attached to the floating plate of the power supply, and the posture of the neck is corrected by the neck guide when the power supply is moved.

According to the present invention, in a power supply device for supplying power to a terminal pin led out from a neck portion of a cathode ray tube, a cathode ray tube positioning means for supporting the cathode ray tube by an attachment portion of an explosion-proof band and a neck portion are penetrated. At least a power supply socket is attached to a floating plate having an opening, and a power supply unit provided with a stopper unit that abuts the floating plate to correct the posture of the floating plate, and a cathode line in which the power supply unit is positioned by a positioning means. And a means for moving the tube relative to the tube.

According to the present invention, in the above power supply device, the floating plate of the power supply unit is further provided with a neck guide portion for guiding the neck portion.

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show a power supply device used in a method of supplying power to a cathode ray tube according to this embodiment. As shown in FIGS. 1 and 2, the power supply device 21 of this example includes cathode ray tube positioning means 22 for supporting the cathode ray tube 1 such that the neck portion 1N thereof is as horizontal as possible, and FIGS. As shown in FIG. 3, the cathode ray tube 1 has a socket (that is, a power source socket) 39 connected to a power source (not shown) and can move toward the cathode ray tube 1 positioned by a moving means 35 such as a cylinder. And a power supply unit 23.

In the cathode ray tube 1, an explosion-proof band 2 is attached to the outer periphery of the panel, and mounting portions 3 [3A, 3B, 3C, 3D] are integrally attached to the four corners of the explosion-proof band 2, respectively.

The positioning means 22 for the cathode ray tube 1 has the cathode ray tube 1 on the pallet 24 at three points, that is, three mounting portions 3A,
First, second and third support members 2 supported by 3B and 3C
6, 27 and 28.

The first and second support members 26 and 27 are
When the cathode ray tube 1 is arranged so that the neck portion 1N thereof is as horizontal as possible, it engages with the two mounting portions 3A and 3B located on the lower side to respectively support them, and the upper portions thereof respectively. A receiving groove 29 that engages with the mounting portions 3A and 3B is formed. When the cathode ray tube 1 is arranged so that the neck portion 1N thereof is as horizontal as possible, the third supporting member 28 engages with one mounting portion 3C located on the upper side to support the pallet. A support piece 31 that rotates around the shaft 30 is provided on an upper portion of a column 33 arranged on the 24, and an engagement groove 32 that engages with the mounting portion 3C is formed at the tip of the support piece 31.

In this supporting means 22, the cathode ray tube 1
The mounting portions 3A and 3B are engaged with the receiving grooves 29 of the first and second supporting members 26 and 27, and the supporting piece 31 of the third supporting member 28 is rotated to attach the engaging groove 32 to the mounting portion. By engaging with 3C, the cathode ray tube 1 is reliably supported at three points. In this state, the cathode ray tube 1 is positioned so that its neck portion 1N is as horizontal as possible. Strictly speaking,
Since it is supported with some looseness (with play) depending on the accuracy of the mounting portion and the accuracy of the support members 26, 27, 28, it is difficult to make it horizontal, and although it is supported at a slight inclination,
It is more horizontally supported than point support. The supporting means 22 of this example is configured so as to be able to support two tube types having different sizes.

As shown in FIGS. 3 and 4, the power supply unit 23 is arranged on the substrate 36 so as to be movable in the direction of arrow a by the moving means 35 such as a cylinder. The power supply unit 23 is held by a plurality of springs 37 (37A, 37B, 37C, 37D) arranged in a radial pattern in this example, and has a floating plate 38 having an opening 38a in the center through which the neck 1N can pass. And a socket (so-called power socket) 3 integrally attached to the rear surface of the floating plate 38 and connected to a power source (not shown).
9 and a neck guide portion 40 that is integrally attached to the front surface of the floating plate 38 and guides the neck portion 1N. The front opening of the neck guide portion 40 is the neck portion 1
The tapered portion 40a is formed so that N can easily enter.

Floating plate 38, power socket 39
The neck guide portion 40 is coaxially arranged and integrated. The power socket 39 is attached to the floating plate 38 via the spacer portion 44.

Spring 37 [37A, 37B, 37
C, 37D] are adjusting bolts 42 [42 [42] fixed to support members 41 movably arranged on the substrate 36, respectively.
A, 42B, 42C, 42D] and floating plate 38
It is stretched radially between and. Floating plate 38
Is an adjustment bolt 42 [42A, 42B, 42C,
42D], the opening 38a is adjusted to the center. Therefore, the floating plate 38, the power socket 39, and the neck guide portion 40, which are held by the spring 37, can move three-dimensionally with respect to the support body 41.

On the other hand, on the rear surface side of the floating plate 38, a stopper portion 46 having a reference surface 45 in a vertical surface with respect to the horizontal axis x is arranged so as to face the floating plate 38. The stopper portion 46 is fixed to the support body 41. In addition, a block plate 47 that blocks the floating plate 38 to prevent it from popping out is disposed on the front side of the floating plate 38. This block board 4
7 is also fixed to the support 41. Floating board 3
8 is movable between the stopper portion 46 and the block plate 47.

The power supply unit 23 is configured to move on the substrate 36 in the x direction of the axis (that is, the direction of arrow a) by the moving means 35 such as schilling.

Next, a method of supplying power to the cathode ray tube using the power supply device 21 will be described.

First, as shown in FIG. 5, the cathode ray tube 1 is positioned by the positioning means 22 shown in FIGS.
By positioning the cathode ray tube 1, the neck portion 1N becomes horizontal or nearly horizontal, and faces the neck guide portion 40 of the power supply portion 23.

Next, the power supply unit 23 is moved by the moving means 35 shown in FIG. 4 in the direction of arrow a, that is, to the positioned neck portion 1N side. Then, as shown by the solid line in FIG. 6, the entire power supply unit 23 moves forward while guiding the neck portion 1N by the neck guide portion 40. At this time, even if the neck portion 1 is slightly inclined, the neck guide portion 40 is in a state of being freely movable due to the opening having the taper portion 40a of the neck guide portion 40 and the floating plate 38, so that the neck portion can be easily moved. 1 is the neck guide part 4
At the same time when the neck portion 1N is inserted into 0, the neck guide portion 40 corrects the posture of the neck portion 1N so as to be more horizontal. That is, the posture is corrected by the amount of backlash of the support of the cathode ray tube 1. Then, the neck portion 1 is moved forward by the power supply unit 23.
The N terminal pin 50 penetrates the floating plate 38 and is inserted into the power socket 39.

On the other hand, by inserting the neck portion 1N,
When the floating plate 38 is slightly inclined and the terminal pin is caught in the middle, the floating plate 38 is pushed by the neck portion 1N together with the neck guide portion 40 and the power socket 39, and abuts on the reference surface 35 of the stopper portion 46 at the rear side to float. The posture of the plate 38 is corrected, and accordingly, the posture of the power supply socket 39 integrated with the floating plate 38 is corrected, and at the same time, the power supply socket 39 is forcibly advanced by the stopper portion 40, and as shown by a chain line, The pin 50 is completely inserted into the power socket 39, and the connection between the terminal pin 50 and the power socket 39 is ensured. As a result, power is supplied to the electron gun of the cathode ray tube 1. Then, the deflection yoke adjustment or various other inspections can be performed.

Thus, according to this embodiment, the cathode ray tube 1
To support the cathode ray tube 1 so that the neck portion 1N is as horizontal as possible by supporting three points of the three attachment portions 3A, 3B, 3C of the attachment portions 3 attached to the explosion-proof band. Can be supported in the state. On the other hand, the power source socket 39 and the neck guide part 40 are integrally attached to the floating plate 38 held by the springs 37 [37A to 37D], and the stopper part having the reference surface 45 so as to face the rear surface side of the floating plate 38. By providing the power supply unit 23 formed by 46 and moving the power supply unit 23 toward the neck portion 1N, the neck portion 1N
The terminal pin 50 can be smoothly inserted into the power socket 39 to supply desired power to the electron gun.

Also, in the tube type in which the gun center coil 14 of FIG. 9 is installed in the neck portion 1N as the cathode ray tube 1, the length of the neck guide portion 40 in the axial center x direction interferes with the gun center coil 14. The power supply socket 39 can be automatically inserted by shortening it to such an extent that it does not occur or by removing the neck guide portion 40.

In this embodiment, the terminal pin 50 of the neck 1N
Since the power supply socket 39 can be automatically inserted into the terminal smoothly, the accidental bending of the terminal pin 50 due to a connection error can be avoided. Terminal pin 50 and power socket 39 at the initial stage of insertion
Even when the connection of the power supply socket 39 is not securely performed, the posture of the power socket 39 is corrected by the floating plate 38.
Finally, it is automatically inserted and connected.

In the above example, the power supply is described when the cathode ray tube 1 is arranged so that the neck portion is as horizontal as possible, but in addition, the cathode ray tube 1 is arranged so that the neck portion 1N is as vertical as possible. Even when arranged, the mounting part 3
By fixing the cathode ray tube 1 and installing the power supply unit 23 so as to correspond to the neck portion 1N, automatic power supply can be performed as in the above example.

[0036]

According to the method of supplying power to the cathode ray tube according to the present invention, the neck portion of the cathode ray tube is positioned in a more correct position, and when the power supply portion is advanced, the power supply socket is moved by the floating plate. Since the terminal pin is inserted into the power socket corresponding to the position of the terminal pin on the neck portion, power can be easily and reliably supplied to the electron gun of the cathode ray tube. Therefore, the deflection yoke adjustment of the cathode ray tube or various inspections can be smoothly performed, and the productivity of the cathode ray tube can be improved.

Further, with regard to the tube type having the gun center coil attached to the neck portion, the power can be surely and automatically supplied.

According to the power supply device of the present invention, when power is supplied to the electron gun of the cathode ray tube in the deflection yoke adjustment, various inspections, etc., the terminal pin at the neck portion of the cathode ray tube and the power socket can be smoothly and It can be surely connected, and the work efficiency can be improved. In addition, it is possible to avoid breakage of the terminal pins and improve productivity of the cathode ray tube.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of positioning means for a cathode ray tube in a power supply device according to the present invention.

FIG. 2 is a front view showing an example of positioning means for a cathode ray tube in the power supply device according to the present invention.

FIG. 3 is a front view of a power supply unit in the power supply device according to the present invention.

FIG. 4 is a partial cross-sectional plan view of a power supply unit in the power supply device according to the present invention.

FIG. 5 is a cross-sectional view of essential parts showing an operating state of the power supply device according to the present invention.

FIG. 6 is a cross-sectional view of essential parts showing an operating state of the power supply device according to the present invention.

FIG. 7 is a partial cross-sectional side view showing an example of a conventional power supply device.

FIG. 8 is a partial cross-sectional front view showing an example of a conventional power supply device.

FIG. 9 is a side view for explaining a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cathode ray tube 1N Neck part 2 Explosion-proof band 3 [3A, 3B, 3C, 3D] Attachment part 21 Power supply device 22 Cathode ray tube positioning means 23 Power supply part 24 Pallet 26, 27, 28 Support member 37 [37A, 37B , 37C, 37D] Spring 38 Floating plate 39 Power socket 40 Neck guide part 46 Stopper part 50 Terminal pin

Claims (4)

[Claims] 1. A method of supplying power to a terminal pin led out from a neck portion of a cathode ray tube, wherein the cathode ray tube is supported by an attachment portion of an explosion-proof band, and at least a power socket is attached to a floating plate,
The floating plate is brought into contact with the floating plate to move a power supply unit having a stopper section for correcting the posture of the floating plate, and the floating plate is used to align the position of the power socket with the terminal pin of the neck part. A method of supplying power to a cathode ray tube, which is characterized in that it is inserted into a terminal pin to supply power. 2. The neck guide part is further attached to the floating plate of the power supply part, and the posture of the neck part is corrected by the neck guide part when the power supply part is moved. A method for supplying power to the described cathode ray tube. 3. In a power supply device for supplying power to a terminal pin led out from a neck portion of a cathode ray tube, a cathode ray tube positioning means for supporting the cathode ray tube by an attachment portion of an explosion-proof band and the neck portion penetrates. At least a power supply socket is attached to a floating plate having an opening, a power supply unit is provided with a stopper unit that abuts the floating plate to correct the posture of the floating plate, and the power supply unit is positioned by the positioning unit. And a means for moving the cathode ray tube with respect to the cathode ray tube. 4. The power supply device according to claim 3, wherein the floating plate of the power supply unit is provided with a neck guide part for guiding the neck part.