JP3005252B2 - Picture tube component support device and picture tube device using the same - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a picture tube component, and more particularly to a support device for a deflection device. Generally, the deflection device is fixed in position by a clamp ring at the neck of the picture tube and is supported on the cone of the picture tube by a support device.

2. Description of the Prior Art As soon as a deflection device, which is pre-tightly coupled to the neck of a picture tube, is aligned to ensure that the image characteristics are obtained within specified tolerances, the deflection device is turned on. Must be fixed in its final position above. In current technology, this is accomplished by rotating a screw located on the holding part until it abuts the cone of the picture tube, or by pushing a wedge between the holding part and the cone of the picture tube. Had been In both of these fixing methods, it has proven difficult to carry out this fixing process in such a way as to ensure that the set position of the deflection device is maintained. It should be noted that the deflecting device together with the picture tube is rigidly mounted in the alignment device. If the operator tightens one of the above screws more strongly than the other, the holding part will be slightly displaced from the correct position, causing an elastic force, which will cause the tube with the fixed deflection device to be removed from the alignment device Sometimes you will be loosened. This is also the case when one of the fixed wedges is pushed strongly between the holding part and the cone part of the picture tube.

Therefore, when both the screw-type support element and the wedge-type support element are used, when they are removed from the alignment device, the alignment position of the deflecting device is not reliably maintained.

SUMMARY OF THE INVENTION Therefore, a deflection for a picture tube arranged to ensure that the deflection device does not change its position when removed from the alignment device after being fixed to the picture tube inside the alignment device Providing a support for the device has long been a problem.

Means for Solving the Problems The present invention relates to a support device for a picture tube component provided with one or more support elements, wherein the support element is free in the direction of the picture tube inside a guide means having a smooth inner surface. And a pin which can be stopped at an arbitrary set position inside the guide means, and which occupies a part of the angular range in the peripheral direction, and has a threaded portion provided along the longitudinal direction of the pin. The guide means has a recess having an angular width larger than the angular width of the thread portion in the peripheral direction, and the pin is positioned in the guide means at the angular position of the pin where the thread portion is located in the recess. After the tip of the pin is brought into contact with the image tube, the pin is rotated by a predetermined angle to advance the pin, and the tip of the pin is moved to the image tube. Pressing and the thread part It is bonded to the inner surface of the guide means and generates a defined force capable of holding the said picture tube and the image tube parts with a constant positional relationship.

The present invention also features an image tube device in which the image tube and the image tube component are held in a fixed positional relationship by the image tube component support device as described above.

Although the image tube component support device of the present invention is particularly suitable as a support device for holding the deflection device in an adjusted state,
For example, the adjustable multipole magnet device can be used as a support device for holding after adjustment.

The advantage of the present invention will be described when the support element is a pin. It is guided in an aligned mounting device on the picture tube and can be glued to the hole at any desired setting. Once the desired alignment has been obtained, the pin is moved until it abuts the picture tube, and the pressure acting on the pin has no effect on the holding part of the deflection device. This is because the pins can move freely in the holding part. No force transmission takes place between the picture tube and the deflecting device until the pins are glued to the holes. However, if the pin is not inherently elastic, no force will be generated to change the adjustment after bonding.

The fact that the force between the picture tube and the deflecting device is only the force resulting from the elastic deformation of the moved pin can be used to selectively set the tension between the picture tube and the deflecting device. If, for example, the pin has a cap made of an elastic material at its tip in contact with the picture tube, this cap will deform in response to the force pressing the pin against the picture tube. This pressing force can be designed to be relatively uniform, so that the obtained alignment position is reliably maintained without change. Such a relatively precise adjustment of the pre-stress is not possible when using conventional support elements. If conventional screws are used, they must all be tightened with the same torque, and it must be ensured that the torque is not affected by friction and depends only on the pre-stress. This condition is never actually satisfied. Because the parts used are made of plastic, some of them can be easily turned, but some are very difficult to turn. Therefore, the torque is substantially determined by friction, so that the same stress cannot be applied in advance even with the same torque. This state is the same when a normal wedge is used. With relatively light thrust, the wedge can be pre-stressed with a relatively high stress. However, different tensions are created when the same thrust is applied to different wedges. This is because the thrust is strongly dependent on the frictional force of the wedge between the wedge and the picture tube and between the wedge and the holding part. It should also be noted that wedges with different angles are used in practice to accommodate different distances between the deflection device and the picture tube at different points.
Even if the same friction force and the same thrust are given,
Different tensions result when wedges with different angles are used.

On the other hand, as already explained, when elastic pins are used, the tension depends only on the pressure used and there is no significant friction between the pins and the holes. Since it does not matter much whether the pin fits well in the hole, the friction between the pin and the hole is easily overcome.

For quick mounting of the support element in the installation, it is particularly advantageous when the support element and the mounting have catches which allow the support element to be moved only in the direction of the picture tube. The component is then fixed in that position as soon as it has reached the adjustment end position. In this case, however, there is a travel path difference (depending on the locking function) between the different fixed positions, so that a slightly different tension may occur.

In particular, if the support element is configured in the form of a pin and has a thread in the longitudinal direction over some angular range around it, and the guide is configured to have a recess not less than the peripheral angle of the screw, It is valid. As long as the support element is positioned in the guide so as to ensure that the partial screw moves in the recess, it can move back and forth with very little force. However, once moved to the desired position, it needs to be turned slightly to fix the position relative to the guide. Depending on the pitch of the screw, the pin moves a specified amount further forward with respect to the guide when rotated for fixation. In this way, a precisely determined tension is set only according to the pitch of the screws and the rotation angle used.

[Example] Hereinafter, an example will be described with reference to the accompanying drawings. The deflection device 10 shown in FIGS. 1 and 2 comprises a holding part having a front holding ring 11 and a rear clamping ring 12. The holding part supports a deflection winding 13 (shown schematically) and a contact 14.

Around the front retaining ring 11, three support legs 15 are provided at equal angles. Each support leg 15 has a guide hole 16 with a pin 17 mounted therein (4a
See Figure and Figure 4b). Each pin 17 is the cone of the picture tube
Acts as a support element for supporting the deflection device 10 on 18K. At the neck 18H of the picture tube, the deflection device 10 is mounted by means of a clamp ring 12.

The structure of the pin 17 and the associated guide hole 16 is shown in FIGS. 3 and 4. Each pin 17 has two longitudinal partial screws 19, each of which occupies a partial angular range around the pin 17. The tip of the thread protrudes beyond the rest of the pin without the screw. This is particularly clearly shown in FIG. 4a. The guide hole 16 is provided with two recesses 21 which are aligned with the partial screw 19 and easily move in the guide hole 16 when the partial screw 19 is inserted into the hole 16 so as to be aligned with the recess 21 Guarantee what you can do. Each pin in the position shown in Fig. 4a
17 can freely move back and forth in the guide hole 16 until it is bonded to the cone 18K of the picture tube. However, if the pin 17 is rotated 90 degrees, the partial screw 19 bites into the non-recessed part of the wall of the guide hole 16. This is the guide hole 16 of the pin 17
The position inside is fixed, and at the same time it is moved a small distance depending on the direction of rotation, the angle of rotation and the pitch of the screw involved.

In order to fix the deflection device in a position on the picture tube, the following method is used with the support element of the above design. First, the deflection device is operated as usual in the neck of the picture tube.
H and is attached to the specified longitudinal position in the neck portion 18H of the picture tube by tightening the clamp screw 22 of the clamp ring 12. The picture tube and the deflecting device are then brought into contact and in operation of these components the deflecting device 10 is adjusted by the adjusting device until the image quality is within the specified tolerance. In the adjusted and aligned position, the deflection device 10 must be permanently fixed. It is in this case that the pins 17 described above are used. No.
In the position shown in FIG. 4a, they are pushed towards the cone 18K of the picture tube. Deflector and picture tube cone 18
With respect to the force acting between K and K, it is not important whether the strength of the force pressing the pin 17 or whether the force is the same for all the pins. When a particular pin 17 is pushed toward the cone 18K of the picture tube, it is rotated 90 degrees to the position shown in FIG. 4b. This rotation is performed in such a manner that the deflection device 10 is further advanced with respect to the cone portion 18K of the picture tube. This pivoting movement fixes the position of the pin 17 and at the same time fixes the adjusted position of the deflection device 10 as well. The slight forward movement due to the rotation of the pin 17 during the fixing creates a small tension between the deflection device and the picture tube, so that a particularly tight mounting of the deflection device 10 is obtained. The adjusted position is not changed thereby. In all cases, the magnitude of the tension provided by a constant rotation of 90 degrees depends only on the pitch of the screw and can be specified thereby.

The pin 17 shown in FIGS. 1 to 3 has a groove for rotation.
It has an enlarged head 23 with 24. However, it is not necessary to enlarge the head 23. Instead of the groove 24, for example, a head having a polygonal outside or inside can be provided. Further, the number of partial screws can be more or less than two. If only one partial screw is provided, for example when fixing the position, the pin has the advantage that it can be turned 270 degrees, if necessary, to obtain a particularly large fixing tension.

Instead of a pin having a threaded portion occupying a partial angular range in the peripheral direction as shown in FIGS.
A support device using a pin having a structure as shown in the figure was also studied. In this support device, pin 17.5
The guide hole 16.5 is provided with a catch 25.7 and a guide hole 26.16, which are aligned so that the pin 17.5 can move in the direction of the picture tube cone 18K.
A comb cap 26 is attached to the front end of the pin 17.5. When the adjustment of the deflection device 10 is completed and the position is fixed, the pin 17.5 is fixed by a predetermined force to the cone portion 18K of the picture tube.
, Whereby the rubber cap 26 at the front end of the pin 17.5 first contacts the cone portion 18K and is compressed and fixed until the catch 25.17 and the guide hole 26.16 are joined. In this structure, the vertical movement position of the pin 17.5 in the guide hole 16.5 is the guide hole 2 of the shape corresponding to the catching section 25.17.
Determined by the position that is joined to the position of 6.16. In this device, after the tip of the pin 17.5 comes in contact with the cone portion 18K of the picture tube, the pin 17.5 needs to be further advanced to a position where the capturing portion 25.17 and the guide hole 26.16 are connected. Absorbed by compression.

Therefore, the tip of pin 17.5 is
The distance the pin 17.5 travels from contact with K to the stable position depends on the relationship between the catching section 25.17 and the guide hole 26.16 at that time, multiple pins are used, and each pin is adjusted and adjusted. The pressure applied to the cone portion 18K of the picture tube by each pin is different when the distance from the contact portion 18K to the stable position after the contact with the cone portion 18K is different. In the structure shown in FIG. 5, a rubber cap 26 is attached to prevent excessive pressure from being applied to the cone portion 18K of the picture tube due to its compression. However, the pressure applied to the cone portion 18K by each pin is equalized. I can't.
On the other hand, according to the present invention, if the pins are rotated at the same angle after the contact, the pins always advance at the same pitch, so that each pin can support the picture tube with a uniform pressure.

In the embodiment shown in FIG. 6, a pin 1 having a groove 27 on its surface is shown.
7.6 is used. The associated guide hole 16.6 has an adhesive passage 28 for bonding the grooved pin 17.6 when the pin 17.6 is pressed against the cone 18K of the picture tube.
The grooved pin 17.6 also has a rubber cap 26 at its front end for purposes such as those described above.

In the above embodiment of the design of the guide hole and the pin, the pin can be moved in the guide hole without the need for large forces, but is preferably guided so that it can be fixed in one or more adjustment positions. It is aligned so that it can be fixed at any position with respect to the hole. Combinations of guide holes and pins having these properties can be implemented in many other forms. For example, a nail-like configuration, i.e., a configuration in which the wedge acts on the pin after the pin is pressed against the cone of the picture tube so as to be enlarged and clamped in the guide hole, is possible. For such a purpose, a slit may be provided in the pin.

The pins shown in the embodiments are further configured to provide a specific tension between the deflection device and the cone of the picture tube. However, a certain amount of tension can also be achieved by ensuring that the support leg is pulled by the alignment device with the specified force while the pins are pushed towards the picture tube and while they are being fixed in position. can get. After the deflection device has been removed from the alignment device, the elastic restoring force of the support legs ensures that the desired tension is applied. Further, it is not necessary to provide three support legs of the deflection device, and the number of the support legs can be changed.

The described embodiments relate exclusively to deflection devices. However, the pins that are moved and contact in the manner described above can also be used in mounting other components, such as, for example, adjusting the pole position of a multi-pole magnet of the type used for convergence and color purity settings. In this type of application, the pins can be supported on the tube neck or on the deflection device in front of it.

[Brief description of the drawings]

FIG. 1 is a side view of a deflection device fixed at the position of a picture tube (only part of which is shown). FIG. 2 is a front view of the deflection device shown in FIG. FIG. 3 is a side view of a pin-type support element provided with partial screws. 4a and 4b are cross-sectional views of the guide hole having the pin of FIG. 3, wherein FIG. 4a is in the adjustment position and FIG. 4b is in the fixed position. FIG. 5 is a cross-sectional view of a guide hole having a movable pin having a capturing portion. FIG. 6 is a sectional view of a guide having a pin that can be bonded inside the guide hole. 15 ... Support leg, 16 ... Guide hole, 17 ... Pin, 19 ... Partial screw.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01J 29/82

Claims (6)

(57) [Claims] An apparatus for supporting a picture tube component comprising at least one support element, said support element being free to move in the direction of the picture tube inside a guide means having a smooth inner surface, inside the guide means. A pin that can be stopped at an arbitrary set position of the pin, the pin occupies a part of the angular range in the peripheral direction, and has a threaded portion provided in a longitudinal direction of the pin, The thread portion has a recess with an angular width greater than the angular width of the thread portion in the direction, wherein the thread portion at the angular position of the pin located in the recess moves the pin longitudinally to a desired rest position in the guiding means. It is possible to exercise to
After the tip of the pin is brought into contact with the image tube, the pin is rotated by a predetermined angle, the pin is advanced, the tip of the pin is pressed against the image tube, and the thread portion is joined to the inner surface of the guide means to form the image. A support device for a picture tube part, which generates a specified force capable of holding a tube and a picture tube part in a fixed positional relationship. 2. An adhesive passage for introducing an adhesive for adhering a pin into the guide means is formed in the smooth inner surface of the guide means.
A support device as described. 3. A plurality of support elements, each of said support elements having a pin which is freely movable in a support direction of the picture tube inside the guide means and which can be stopped at an arbitrary position inside the guide means. The pin has a groove extending over at least a part of its angular range in a peripheral direction, and an inner surface of each guide means is formed with an adhesive passage for introducing an adhesive bonding the pin into the guide means. 2. The method according to claim 1, wherein
A support device as described. 4. The supporting device according to claim 2, wherein the adhesive passage has a width that exposes only a part of the periphery of the pin. 5. A supporting device according to claim 1, wherein said pin has an elastic end cap for bonding to said image tube by crimping. 6. An image tube apparatus characterized in that the image tube and the image tube parts are held in a fixed positional relationship by the supporting device according to any one of claims 1 to 5.